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PROCUREMENT OPPORTUNITY

Marine Consultancy Framework

NATIONAL GRID UK LIMITED · compiled

Tender information last checkedLast checked 29 Sept 2026, 19:04.

Opportunity overview

National Grid is an international Electricity and Gas Network Company based in the UK with operations in north-eastern US, and one of the largest investor-owned energy companies in the world. National Grid are looking to set up a multi-year Marine Consultancy Framework to service offshore cable laying as part of the Great Grid Upgrade. The Framework will cover the full gamut of consultancy disciplines required to support end to end marine projects. Including Subsea Cable Technical Consultancy, Unexploded Ordinance (UXO ALARP), Metocean, Marine Survey Support and HVDC/HVAC Platform Engineering Services. The Framework will be developed in line with National Grid processes, other best practice guidance i.e. DNVGL-RP-0360 and European Subsea Cables Association guidelines.

Awarded to

Amounts belong to published awards or contracts. Where several suppliers share one value, it is labelled as shared and is not a supplier-specific allocation.

6 ALPHA ASSOCIATES LIMITED

Matched by number
Contract value
£1.5m
Awarded
Not supplied
Contract signed
5 Sept 2025
Award ID
079462-2025-1
Status
active
Identifier
GB-COH 05119798
Location
Rickmansworth, UK, United Kingdom

OFFSHORE WIND CONSULTANTS LIMITED

Matched by number
Contract value
£37m
Awarded
Not supplied
Contract signed
1 Sept 2025
Award ID
079462-2025-10
Status
active
Identifier
GB-COH 07861245
Location
London, UK, United Kingdom

OVE ARUP & PARTNERS LIMITED

Matched by number
Contract value
£43.5m
Awarded
Not supplied
Contract signed
1 Sept 2025
Award ID
079462-2025-11
Status
active
Identifier
GB-COH 01312453
Location
London, UK, United Kingdom

RED PENGUIN ASSOCIATES LTD

Matched by number
Contract value
£37m
Awarded
Not supplied
Contract signed
1 Sept 2025
Award ID
079462-2025-12
Status
active
Identifier
GB-COH 06430404
Location
Portsmouth, UK, United Kingdom

TETRA TECH RPS ENERGY LIMITED

Matched by number
Contract value
£1.5m
Awarded
Not supplied
Contract signed
1 Sept 2025
Award ID
079462-2025-13
Status
active
Identifier
GB-COH 01465554
Location
Abingdon, UK, United Kingdom

TGS 4C OFFSHORE LIMITED

Matched by number
Contract value
£35m
Awarded
Not supplied
Contract signed
23 Jun 2025
Award ID
079462-2025-14
Status
active
Identifier
GB-COH 06955052
Location
Weybridge, UK, United Kingdom

WOOD GROUP UK LIMITED

Matched by number
Contract value
£4.5m
Awarded
Not supplied
Contract signed
8 Sept 2025
Award ID
079462-2025-15
Status
active
Identifier
GB-COH SC296737
Location
Aberdeen, UK, United Kingdom

XODUS GROUP LIMITED

Matched by number
Contract value
£38.5m
Awarded
Not supplied
Contract signed
1 Sept 2025
Award ID
079462-2025-16
Status
active
Identifier
GB-COH SC286421
Location
Aberdeen, UK, United Kingdom

ABP MARINE ENVIRONMENTAL RESEARCH LIMITED

Matched by number
Contract value
£2m
Awarded
Not supplied
Contract signed
1 Sept 2025
Award ID
079462-2025-2
Status
active
Identifier
GB-COH 01956748
Location
London, UK, United Kingdom

AKER SOLUTIONS LIMITED

Matched by number
Contract value
£4.5m
Awarded
Not supplied
Contract signed
1 Sept 2025
Award ID
079462-2025-3
Status
active
Identifier
GB-COH 04977339
Location
Leeds, UK, United Kingdom

DNV SERVICES UK LIMITED

Matched by number
Contract value
£6.5m
Awarded
Not supplied
Contract signed
5 Sept 2025
Award ID
079462-2025-4
Status
active
Identifier
GB-COH 01503799
Location
London, UK, United Kingdom

ENVIRONMENTAL RESOURCES MANAGEMENT LIMITED

Matched by number
Contract value
£39m
Awarded
Not supplied
Contract signed
13 Oct 2025
Award ID
079462-2025-5
Status
active
Identifier
GB-COH 01014622
Location
London, UK, United Kingdom

HYDROFIX LIMITED

Matched by number
Contract value
£38.5m
Awarded
Not supplied
Contract signed
4 Sept 2025
Award ID
079462-2025-6
Status
active
Identifier
GB-COH 04713320
Location
Helsby, UK, United Kingdom

JACOBS U.K. LIMITED

Matched by number
Contract value
£37m
Awarded
Not supplied
Contract signed
1 Sept 2025
Award ID
079462-2025-7
Status
active
Identifier
GB-COH 02594504
Location
London, UK, United Kingdom

METOC LIMITED

Matched by number
Contract value
£39m
Awarded
Not supplied
Contract signed
1 Sept 2025
Award ID
079462-2025-8
Status
active
Identifier
GB-COH 01489779
Location
Brentwood, UK, United Kingdom

MOTT MACDONALD LIMITED

Matched by number
Contract value
£4.5m
Awarded
Not supplied
Contract signed
6 Oct 2025
Award ID
079462-2025-9
Status
active
Identifier
GB-COH 01243967
Location
London, UK, United Kingdom

Classification

  • CPV73112000 — Marine research services

Lots

  • Offshore Consultancy Support£35m
  • Survey Support£2m
  • Marine UXO Consultant£1.5m
  • Weather/Metocean£2m
  • HVDC Platform Engineering Services£4.5m

Published notice details

Additional information from the published procurement release. Fields appear only when supplied by the source; check the original notice and tender documents before acting.

Scope, procedure and submissions

Id
WS4309414434
Status
complete
Has Recurrence
No
Procurement Method
selective
Main Procurement Category
services
Procurement Method Details
Negotiated procedure with prior call for competition

Covered By

GPA

Amendments

Entry 1
Id
1

Unstructured Changes

Entry 1
Related Lot
1, 2, 3, 4, 5

Where

Section
II.2.14

New Value

Text
National Grid UK Limited will conduct the procurement and enter into the framework agreement with the successfully appointed suppliers for its own benefit and for the benefit of the entities identified below. National Grid UK Limited or any of the following entities shall be entitled to call off from the framework agreement and enter into contracts resulting from the call off: 1. Any parent undertakings or subsidiary undertakings (each term as defined in section 1162 Companies Act 2006 except that references in that section to "majority" shall be replaced by reference to "25% or more") of National Grid UK Limited and any subsidiary undertakings of any such parent undertakings at the time of the call off including without limitation: a) National Grid Electricity Transmission Plc b) National Grid LionLink Limited c) National Grid Nautilus Limited d) National Grid Continental Limited e) National Grid Interconnector Holdings Limited f) National Grid Interconnectors Limited g) National Grid North Sea Link Limitedh) National Grid Viking Link Limited i) National Grid IFA 2 Limited j) National Grid NSN Link Limited k) NGET/SPT Upgrades Limited l) Eastern Green Link 1 Limited 2. Any entity that is acting as a project partner with any National Grid call off partner (identified in paragraph 1 above) and which calls off jointly with any such National Grid entity including, without limitation,: a) Scottish Hydro Electric Transmission Plc b) TenneT TSO B.V. c) TenneT TSO GmbH d) TenneT Offshore GmbH e) Elia Asset NV/SA f) Energinet Eltransmission A/S g) Statnett SF h) SPT Transmission Plc k) Transmission system operators and other developers and/or operators of HVDC projects; and/or 3. Any special purpose vehicle, incorporated joint venture or contractual joint venture, between any of the parties identified in paragraphs 1 and 2 above. It should be noted that, whilst National Grid Interconnector Holdings Limited and any of its subsidiaries whether current or future, which hold an interconnector licence, and National Grid Interconnectors Limited, are included within the scope of the Marine Survey Framework agreement, and therefore entitled to call off under it, these entities are not subject to the Utilities Contracts Regulations 2016 or any other relevant procurement regime. These entities' participation in this procurement process and/or the framework agreement does not cause them to be subject to those rules in whole or in part.

Old Value

Text
National Grid UK Limited will conduct the procurement and enter into the framework agreement with the successfully appointed suppliers for its own benefit and for the benefit of the entities identified below. National Grid UK Limited or any of the following entities shall be entitled to call off from the framework agreement and enter into contracts resulting from the call off: 1. Any parent undertakings or subsidiary undertakings (each term as defined in section 1162 Companies Act 2006 except that references in that section to "majority" shall be replaced by reference to "25% or more") of National Grid UK Limited and any subsidiary undertakings of any such parent undertakings at the time of the call off including without limitation: a) National Grid Electricity Transmission Plc b) National Grid LionLink Limited c) National Grid Nautilus Limited d) National Grid Continental Limited e) National Grid Interconnector Holdings Limited f) National Grid Interconnectors Limited g) National Grid North Sea Link Limitedh) National Grid Viking Link Limited i) National Grid IFA 2 Limited j) National Grid NSN Link Limited 2. Any entity that is acting as a project partner with any National Grid call off partner (identified in paragraph 1 above) and which calls off jointly with any such National Grid entity including, without limitation,: a) Scottish Hydro Electric Transmission Plc b) TenneT TSO B.V. Page 7 to 24 c) TenneT TSO GmbH d) TenneT Offshore GmbH e) Elia Asset NV/SA f) Energinet Eltransmission A/S g) Statnett SF h) Transmission system operators and other developers and/or operators of HVDC projects; and/or 3. Any special purpose vehicle, incorporated joint venture or contractual joint venture, between any of the parties identified in paragraphs 1 and 2 above. It should be noted that, whilst National Grid Interconnector Holdings Limited and any of its subsidiaries whether current or future, which hold an interconnector licence, and National Grid Interconnectors Limited, are included within the scope of the Marine Survey Framework agreement, and therefore entitled to call off under it, these entities are not subject to the Utilities Contracts Regulations 2016 or any other relevant procurement regime. These entities' participation in this procurement process and/or the framework agreement does not cause them to be subject to those rules in whole or in part.
Entry 2
Id
2

Unstructured Changes

Entry 1

Where

Section
II.2.14

New Value

Text
National Grid UK Limited will conduct the procurement and enter into the framework agreement with the successfully appointed suppliers for its own benefit and for the benefit of the entities identified below. National Grid UK Limited or any of the following entities shall be entitled to call off from the framework agreement and enter into contracts resulting from the call off: 1. Any parent undertakings or subsidiary undertakings (each term as defined in section 1162 Companies Act 2006 except that references in that section to "majority" shall be replaced by reference to "25% or more") of National Grid UK Limited and any subsidiary undertakings of any such parent undertakings at the time of the call off including without limitation: a) National Grid Electricity Transmission Plc b) National Grid LionLink Limited c) National Grid Nautilus Limited d) National Grid Continental Limited e) National Grid Interconnector Holdings Limited f) National Grid Interconnectors Limited g) National Grid North Sea Link Limited h) National Grid Viking Link Limited i) National Grid IFA 2 Limited j) National Grid NSN Link Limited Page 7 to 7 k) National Grid Electricity Distribution (South West) plc 2. Any entity that is acting as a project partner with any National Grid call off partner (identified in paragraph 1 above) and which calls off jointly with any such National Grid entity including, without limitation,: a) Scottish Hydro Electric Transmission Plc b) TenneT TSO B.V. c) TenneT TSO GmbH d) TenneT Offshore GmbH e) Elia Asset NV/SA f) Energinet Eltransmission A/S g) Statnett SF h) Transmission system operators and other developers and/or operators of HVDC projects; and/or 3. Any special purpose vehicle, incorporated joint venture or contractual joint venture, between any of the parties identified in paragraphs 1 and 2 above. It should be noted that, whilst National Grid Interconnector Holdings Limited and any of its subsidiaries whether current or future, which hold an interconnector licence, and National Grid Interconnectors Limited, are included within the scope of the Marine Survey Framework agreement, and therefore entitled to call off under it, these entities are not subject to the Utilities Contracts Regulations 2016 or any other relevant procurement regime. These entities' participation in this procurement process and/or the framework agreement does not cause them to be subject to those rules in whole or in part.

Old Value

Text
National Grid UK Limited will conduct the procurement and enter into the framework agreement with the successfully appointed suppliers for its own benefit and for the benefit of the entities identified below. National Grid UK Limited or any of the following entities shall be entitled to call off from the framework agreement and enter into contracts resulting from the call off: 1. Any parent undertakings or subsidiary undertakings (each term as defined in section 1162 Companies Act 2006 except that references in that section to "majority" shall be replaced by reference to "25% or more") of National Grid UK Limited and any subsidiary undertakings of any such parent undertakings at the time of the call off including without limitation: a) National Grid Electricity Transmission Plc b) National Grid LionLink Limited Page 5 to 7 c) National Grid Nautilus Limited d) National Grid Continental Limited e) National Grid Interconnector Holdings Limited f) National Grid Interconnectors Limited g) National Grid North Sea Link Limited h) National Grid Viking Link Limited i) National Grid IFA 2 Limited j) National Grid NSN Link Limited 2. Any entity that is acting as a project partner with any National Grid call off partner (identified in paragraph 1 above) and which calls off jointly with any such National Grid entity including, without limitation,: a) Scottish Hydro Electric Transmission Plc b) TenneT TSO B.V. c) TenneT TSO GmbH d) TenneT Offshore GmbH e) Elia Asset NV/SA f) Energinet Eltransmission A/S g) Statnett SF h) Transmission system operators and other developers and/or operators of HVDC projects; and/or 3. Any special purpose vehicle, incorporated joint venture or contractual joint venture, between any of the parties identified in paragraphs 1 and 2 above. It should be noted that, whilst National Grid Interconnector Holdings Limited and any of its subsidiaries whether current or future, which hold an interconnector licence, and National Grid Interconnectors Limited, are included within the scope of the Marine Survey Framework Page 6 to 7 agreement, and therefore entitled to call off under it, these entities are not subject to the Utilities Contracts Regulations 2016 or any other relevant procurement regime. These entities' participation in this procurement process and/or the framework agreement does not cause them to be subject to those rules in whole or in part.

Legal basis

Id
32014L0025
Scheme
CELEX

Lot Details

Maximum Lots Bid Per Supplier
9,999,999

Techniques

Has Framework Agreement
Yes

Framework Agreement

Maximum Participants
9,999,999

Second Stage

Successive Reduction
Yes

Tender Period

Ends
13 Feb 2024, 11:00

Contract terms

Performance Terms
Call-off contracts may require a requirement for partnership working.
Tenderer Legal Form
No specific legal form is required in order to participate in the procurement stage. However, National Grid reserves the right to require successfully appointed suppliers to take a specific legal form and/or accept joint and several liability if constituted as a group of economic operators.
Has Electronic Payment
Yes
Has Electronic Ordering
Yes
Electronic Invoicing Policy
allowed

Classification

Id
73112000
Scheme
CPV
Description
Marine research services

Submission terms

Languages

en

Submission Method

electronicSubmission

Lots and requirements

Entry 1
Id
1
Title
Offshore Consultancy Support
Status
cancelled
Has Options
Yes
Has Renewal
Yes
Description
Marine Technical Consultant (MTC) will support the marine route selection work being undertaken by the separately appointed Marine Environmental Consultant. As part of this, the MTC shall provide technical input to the marine routeing and landfall options selection. Fisheries Liaison Office (FLO) shall perform a desktop fisheries activity analysis, for input into the selection of the marine cable route corridor by other consultants. In addition, the FLO shall draft a Fisheries Engagement Strategy to inform project consultations and future works at site. Onsite Client Reps (OCRs) may be required to deploy as representatives of NG and partner organisations during operations throughout the project life cycle. Additional information: National Grid UK Limited will conduct the procurement and enter into the framework agreement with the successfully appointed suppliers for its own benefit and for the benefit of the entities identified below. National Grid UK Limited or any of the following entities shall be entitled to call off from the framework agreement and enter into contracts resulting from the call off: 1. Any parent undertakings or subsidiary undertakings (each term as defined in section 1162 Companies Act 2006 except that references in that section to "majority" shall be replaced by reference to "25% or more") of National Grid UK Limited and any subsidiary undertakings of any such parent undertakings at the time of the call off including without limitation: a) National Grid Electricity Transmission Plc b) National Grid LionLink Limited c) National Grid Nautilus Limited d) National Grid Continental Limited e) National Grid Interconnector Holdings Limited f) National Grid Interconnectors Limited g) National Grid North Sea Link Limited- h) National Grid Viking Link Limited i) National Grid IFA 2 Limited j) National Grid NSN Link Limited k) National Grid Electricity Distribution (South West) plc 2. Any entity that is acting as a project partner with any National Grid call off partner (identified in paragraph 1 above) and which calls off jointly with any such National Grid entity including, without limitation,: a) Scottish Hydro Electric Transmission Plc b) TenneT TSO B.V. c) TenneT TSO GmbH d) TenneT Offshore GmbH e) Elia Asset NV/SA f) Energinet Eltransmission A/S g) Statnett SF h) Transmission system operators and other developers and/or operators of HVDC projects; and/or 3. Any special purpose vehicle, incorporated joint venture or contractual joint venture, between any of the parties identified in paragraphs 1 and 2 above. It should be noted that, whilst National Grid Interconnector Holdings Limited and any of its subsidiaries whether current or future, which hold an interconnector licence, and National Grid Interconnectors Limited, are included within the scope of the Marine Survey Framework agreement, and therefore entitled to call off under it, these entities are not subject to the Utilities Contracts Regulations 2016 or any other relevant procurement regime. These entities' participation in this procurement process and/or the framework agreement does not cause them to be subject to those rules in whole or in part.

Value

Amount
35,000,000
Currency
GBP

Options

Description
Initial term of 6 years, with optional extension of 2 years (8 years total).

Renewal

Description
Plus 2 years plus 1 year

Award criteria

Criteria

Criterion 1
Name
Technical
Type
quality
Description
40
Criterion 2
Name
Commercial
Type
cost
Description
60

Contract period

Duration In Days
1,800

Submission terms

Variant Policy
notAllowed
Entry 2
Id
2
Title
Survey Support
Status
cancelled
Has Options
Yes
Has Renewal
Yes
Description
onduct a comprehensive review of all applicable regulatory requirements for the vessels planned scopes of operation. These should include but not be limited to International, national and local regulations as applicable to the contract. The review should identify all specific regulations relevant to the vessels planned operations and ensure compliance throughout the duration on task. To ensure data meets the required specification National Grid require data across the following marine survey equipment types to be checked for quality and compliance: Bathymetry Seabed classification (from backscatter, side-scan sonar, and samples (physical and imagery) Topography (point cloud and imagery) Sub surface geology (from sub-bottom profilers, core penetration tests and core samples) Anthropomorphic object detection (from magnetometer cross referenced with bathymetry and side-scan sonar). Assurance of data from ancillary systems may also be required: GNSS systems USBL systems Additional information: National Grid UK Limited will conduct the procurement and enter into the framework agreement with the successfully appointed suppliers for its own benefit and for the benefit of the entities identified below. National Grid UK Limited or any of the following entities shall be entitled to call off from the framework agreement and enter into contracts resulting from the call off: 1. Any parent undertakings or subsidiary undertakings (each term as defined in section 1162 Companies Act 2006 except that references in that section to "majority" shall be replaced by reference to "25% or more") of National Grid UK Limited and any subsidiary undertakings of any such parent undertakings at the time of the call off including without limitation: a) National Grid Electricity Transmission Plc b) National Grid LionLink Limited c) National Grid Nautilus Limited d) National Grid Continental Limited e) National Grid Interconnector Holdings Limited f) National Grid Interconnectors Limited g) National Grid North Sea Link Limited- h) National Grid Viking Link Limited i) National Grid IFA 2 Limited j) National Grid NSN Link Limited k) National Grid Electricity Distribution (South West) plc 2. Any entity that is acting as a project partner with any National Grid call off partner (identified in paragraph 1 above) and which calls off jointly with any such National Grid entity including, without limitation,: a) Scottish Hydro Electric Transmission Plc b) TenneT TSO B.V. c) TenneT TSO GmbH d) TenneT Offshore GmbH e) Elia Asset NV/SA f) Energinet Eltransmission A/S g) Statnett SF h) Transmission system operators and other developers and/or operators of HVDC projects; and/or 3. Any special purpose vehicle, incorporated joint venture or contractual joint venture, between any of the parties identified in paragraphs 1 and 2 above. It should be noted that, whilst National Grid Interconnector Holdings Limited and any of its subsidiaries whether current or future, which hold an interconnector licence, and National Grid Interconnectors Limited, are included within the scope of the Marine Survey Framework agreement, and therefore entitled to call off under it, these entities are not subject to the Utilities Contracts Regulations 2016 or any other relevant procurement regime. These entities' participation in this procurement process and/or the framework agreement does not cause them to be subject to those rules in whole or in part.

Value

Amount
2,000,000
Currency
GBP

Options

Description
Initial term of 6 years, with optional extension of 2 years (8 years total).

Renewal

Description
Plus 2 years plus 1 year

Award criteria

Criteria

Criterion 1
Name
Technical
Type
quality
Description
40
Criterion 2
Name
Commercial
Type
cost
Description
60

Contract period

Duration In Days
1,800

Submission terms

Variant Policy
notAllowed
Entry 3
Id
3
Title
Marine UXO Consultant
Status
cancelled
Has Options
Yes
Has Renewal
Yes
Description
The UXO Consultant shall provide a review of legislation and Best Practice Guidance for Marine UXO in the UK Exclusive Economic Zone. The review should highlight the standards for the planning, design, delivery, operation and maintenance, decommissioning or regulation of projects in the marine environment for UXO risk. The review should focus on abandoned explosive ordnance (such as sea-dumped munitions or abandoned ship or aircraft wrecks), rather than chemical warfare agents. The review shall provide a review of the known industry techniques (and their effectiveness) for lower noise alternatives to high order detonation of UXOs within the marine environment. Additional information: National Grid UK Limited will conduct the procurement and enter into the framework agreement with the successfully appointed suppliers for its own benefit and for the benefit of the entities identified below. National Grid UK Limited or any of the following entities shall be entitled to call off from the framework agreement and enter into contracts resulting from the call off: 1. Any parent undertakings or subsidiary undertakings (each term as defined in section 1162 Companies Act 2006 except that references in that section to "majority" shall be replaced by reference to "25% or more") of National Grid UK Limited and any subsidiary undertakings of any such parent undertakings at the time of the call off including without limitation: a) National Grid Electricity Transmission Plc b) National Grid LionLink Limited c) National Grid Nautilus Limited d) National Grid Continental Limited e) National Grid Interconnector Holdings Limited f) National Grid Interconnectors Limited g) National Grid North Sea Link Limited- h) National Grid Viking Link Limited i) National Grid IFA 2 Limited j) National Grid NSN Link Limited k) National Grid Electricity Distribution (South West) plc 2. Any entity that is acting as a project partner with any National Grid call off partner (identified in paragraph 1 above) and which calls off jointly with any such National Grid entity including, without limitation,: a) Scottish Hydro Electric Transmission Plc b) TenneT TSO B.V. c) TenneT TSO GmbH d) TenneT Offshore GmbH e) Elia Asset NV/SA f) Energinet Eltransmission A/S g) Statnett SF h) Transmission system operators and other developers and/or operators of HVDC projects; and/or 3. Any special purpose vehicle, incorporated joint venture or contractual joint venture, between any of the parties identified in paragraphs 1 and 2 above. It should be noted that, whilst National Grid Interconnector Holdings Limited and any of its subsidiaries whether current or future, which hold an interconnector licence, and National Grid Interconnectors Limited, are included within the scope of the Marine Survey Framework agreement, and therefore entitled to call off under it, these entities are not subject to the Utilities Contracts Regulations 2016 or any other relevant procurement regime. These entities' participation in this procurement process and/or the framework agreement does not cause them to be subject to those rules in whole or in part.

Value

Amount
1,500,000
Currency
GBP

Options

Description
Initial term of 6 years, with optional extension of 2 years (8 years total).

Renewal

Description
Plus 2 years plus 1 year

Award criteria

Criteria

Criterion 1
Name
Technical
Type
quality
Description
40
Criterion 2
Name
Commercial
Type
cost
Description
60

Contract period

Duration In Days
1,800

Submission terms

Variant Policy
notAllowed
Entry 4
Id
4
Title
Weather/Metocean
Status
cancelled
Has Options
Yes
Has Renewal
Yes
Description
To better understand project timelines, risks and costs, there is a requirement to understand the environment prior to, during and after the several project stages that make up a successful marine project. To this end the Client requires the following types of analysis / reports to inform the planning and successful completion of its marine works: Projects weather forecasts based on climatological data for planning and contractor assessments. Weather downtime predictions for marine works. Tidal stream and oceanic current modelling to assist in offshore engineering design. Additional information: National Grid UK Limited will conduct the procurement and enter into the framework agreement with the successfully appointed suppliers for its own benefit and for the benefit of the entities identified below. National Grid UK Limited or any of the following entities shall be entitled to call off from the framework agreement and enter into contracts resulting from the call off: 1. Any parent undertakings or subsidiary undertakings (each term as defined in section 1162 Companies Act 2006 except that references in that section to "majority" shall be replaced by reference to "25% or more") of National Grid UK Limited and any subsidiary undertakings of any such parent undertakings at the time of the call off including without limitation: a) National Grid Electricity Transmission Plc b) National Grid LionLink Limited c) National Grid Nautilus Limited d) National Grid Continental Limited e) National Grid Interconnector Holdings Limited f) National Grid Interconnectors Limited g) National Grid North Sea Link Limited- h) National Grid Viking Link Limited i) National Grid IFA 2 Limited j) National Grid NSN Link Limited k) National Grid Electricity Distribution (South West) plc 2. Any entity that is acting as a project partner with any National Grid call off partner (identified in paragraph 1 above) and which calls off jointly with any such National Grid entity including, without limitation,: a) Scottish Hydro Electric Transmission Plc b) TenneT TSO B.V. c) TenneT TSO GmbH d) TenneT Offshore GmbH e) Elia Asset NV/SA f) Energinet Eltransmission A/S g) Statnett SF h) Transmission system operators and other developers and/or operators of HVDC projects; and/or 3. Any special purpose vehicle, incorporated joint venture or contractual joint venture, between any of the parties identified in paragraphs 1 and 2 above. It should be noted that, whilst National Grid Interconnector Holdings Limited and any of its subsidiaries whether current or future, which hold an interconnector licence, and National Grid Interconnectors Limited, are included within the scope of the Marine Survey Framework agreement, and therefore entitled to call off under it, these entities are not subject to the Utilities Contracts Regulations 2016 or any other relevant procurement regime. These entities' participation in this procurement process and/or the framework agreement does not cause them to be subject to those rules in whole or in part.

Value

Amount
2,000,000
Currency
GBP

Options

Description
Initial term of 6 years, with optional extension of 2 years (8 years total).

Renewal

Description
Plus 2 years plus 1 year

Award criteria

Criteria

Criterion 1
Name
Technical
Type
quality
Description
40
Criterion 2
Name
Commercial
Type
cost
Description
60

Contract period

Duration In Days
1,800

Submission terms

Variant Policy
notAllowed
Entry 5
Id
5
Title
HVDC Platform Engineering Services
Status
cancelled
Has Options
Yes
Has Renewal
Yes
Description
Support the Client with Platform knowledge and expertise. A range of tasks and responsibilities aimed at ensuring that the project is executed according to the specifications, schedule, and budget. This work will include but not limited to Platform related tasks: · Technical advisor, subject matter expert for all things 'Platform'. · Creating, developing, and reviewing Platform technical documentation. · Performing quality assurance and quality control on all designs, drawings and relevant materials that are produced by others relating to the Platform. · Providing and managing all necessary markups, feedback, comments, and edits. · Maintaining and tracking Platform submissions, drawings, applications, etc. · Design review and management. · Procurement support. · Project management support. · Programme management support. · Offshore Platform Health, Safety, and Environmental Compliance. The Technical Consultant (TC) will support the platform feasibility and concept evaluation work to help ensure that the HND solutions are technically viable, and economically and environmentally sustainable. The results of this SoW will be critical in the decision making for the project. The works will be used in communications with decision makers, management, investors, Ofgem and various stakeholders. Additional information: National Grid UK Limited will conduct the procurement and enter into the framework agreement with the successfully appointed suppliers for its own benefit and for the benefit of the entities identified below. National Grid UK Limited or any of the following entities shall be entitled to call off from the framework agreement and enter into contracts resulting from the call off: 1. Any parent undertakings or subsidiary undertakings (each term as defined in section 1162 Companies Act 2006 except that references in that section to "majority" shall be replaced by reference to "25% or more") of National Grid UK Limited and any subsidiary undertakings of any such parent undertakings at the time of the call off including without limitation: a) National Grid Electricity Transmission Plc b) National Grid LionLink Limited c) National Grid Nautilus Limited d) National Grid Continental Limited e) National Grid Interconnector Holdings Limited f) National Grid Interconnectors Limited g) National Grid North Sea Link Limited- h) National Grid Viking Link Limited i) National Grid IFA 2 Limited j) National Grid NSN Link Limited k) National Grid Electricity Distribution (South West) plc 2. Any entity that is acting as a project partner with any National Grid call off partner (identified in paragraph 1 above) and which calls off jointly with any such National Grid entity including, without limitation,: a) Scottish Hydro Electric Transmission Plc b) TenneT TSO B.V. c) TenneT TSO GmbH d) TenneT Offshore GmbH e) Elia Asset NV/SA f) Energinet Eltransmission A/S g) Statnett SF h) Transmission system operators and other developers and/or operators of HVDC projects; and/or 3. Any special purpose vehicle, incorporated joint venture or contractual joint venture, between any of the parties identified in paragraphs 1 and 2 above. It should be noted that, whilst National Grid Interconnector Holdings Limited and any of its subsidiaries whether current or future, which hold an interconnector licence, and National Grid Interconnectors Limited, are included within the scope of the Marine Survey Framework agreement, and therefore entitled to call off under it, these entities are not subject to the Utilities Contracts Regulations 2016 or any other relevant procurement regime. These entities' participation in this procurement process and/or the framework agreement does not cause them to be subject to those rules in whole or in part.

Value

Amount
4,500,000
Currency
GBP

Options

Description
Initial term of 6 years, with optional extension of 2 years (8 years total).

Renewal

Description
Plus 2 years plus 1 year

Award criteria

Criteria

Criterion 1
Name
Technical
Type
quality
Description
40
Criterion 2
Name
Commercial
Type
cost
Description
60

Contract period

Duration In Days
1,800

Submission terms

Variant Policy
notAllowed

Items and delivery

Item 1
Id
1
Related Lot
1

Delivery locations

Entry 1
Region
UK
Entry 2
Region
BE
Entry 3
Region
DE
Entry 4
Region
DK
Entry 5
Region
ES
Entry 6
Region
FR
Entry 7
Region
IE
Entry 8
Region
IS
Entry 9
Region
NL
Entry 10
Region
NO
Entry 11
Region
SE
Entry 12
Region
UK
Entry 13
Region
BE
Entry 14
Region
DK
Entry 15
Region
FR
Entry 16
Region
DE
Entry 17
Region
IS
Entry 18
Region
IE
Entry 19
Region
NL
Entry 20
Region
NO
Entry 21
Region
ES
Entry 22
Region
SE

Additional Classifications

Entry 1
Id
73112000
Scheme
CPV
Description
Marine research services
Item 2
Id
2
Related Lot
2

Delivery locations

Entry 1
Region
UK
Entry 2
Region
BE
Entry 3
Region
DE
Entry 4
Region
DK
Entry 5
Region
ES
Entry 6
Region
FR
Entry 7
Region
IE
Entry 8
Region
IS
Entry 9
Region
NL
Entry 10
Region
NO
Entry 11
Region
SE
Entry 12
Region
UK
Entry 13
Region
BE
Entry 14
Region
DK
Entry 15
Region
FR
Entry 16
Region
DE
Entry 17
Region
IS
Entry 18
Region
IE
Entry 19
Region
NL
Entry 20
Region
NO
Entry 21
Region
ES
Entry 22
Region
SE

Additional Classifications

Entry 1
Id
73112000
Scheme
CPV
Description
Marine research services
Item 3
Id
3
Related Lot
3

Delivery locations

Entry 1
Region
UK
Entry 2
Region
BE
Entry 3
Region
DE
Entry 4
Region
DK
Entry 5
Region
ES
Entry 6
Region
FR
Entry 7
Region
IE
Entry 8
Region
IS
Entry 9
Region
NL
Entry 10
Region
NO
Entry 11
Region
SE
Entry 12
Region
UK
Entry 13
Region
BE
Entry 14
Region
DK
Entry 15
Region
FR
Entry 16
Region
DE
Entry 17
Region
IS
Entry 18
Region
IE
Entry 19
Region
NL
Entry 20
Region
NO
Entry 21
Region
ES
Entry 22
Region
SE

Additional Classifications

Entry 1
Id
73112000
Scheme
CPV
Description
Marine research services
Item 4
Id
4
Related Lot
4

Delivery locations

Entry 1
Region
UK
Entry 2
Region
BE
Entry 3
Region
DE
Entry 4
Region
DK
Entry 5
Region
ES
Entry 6
Region
IE
Entry 7
Region
IS
Entry 8
Region
NL
Entry 9
Region
NO
Entry 10
Region
SE
Entry 11
Region
UK
Entry 12
Region
BE
Entry 13
Region
DK
Entry 14
Region
FR
Entry 15
Region
DE
Entry 16
Region
IS
Entry 17
Region
IE
Entry 18
Region
NL
Entry 19
Region
NO
Entry 20
Region
ES
Entry 21
Region
SE

Additional Classifications

Entry 1
Id
73112000
Scheme
CPV
Description
Marine research services
Item 5
Id
5
Related Lot
5

Delivery locations

Entry 1
Region
UK
Entry 2
Region
BE
Entry 3
Region
DE
Entry 4
Region
DK
Entry 5
Region
ES
Entry 6
Region
IE
Entry 7
Region
IS
Entry 8
Region
NL
Entry 9
Region
NO
Entry 10
Region
SE
Entry 11
Region
UK
Entry 12
Region
BE
Entry 13
Region
DK
Entry 14
Region
FR
Entry 15
Region
DE
Entry 16
Region
IS
Entry 17
Region
IE
Entry 18
Region
NL
Entry 19
Region
NO
Entry 20
Region
ES
Entry 21
Region
SE

Additional Classifications

Entry 1
Id
73112000
Scheme
CPV
Description
Marine research services

Published documents

Entry 1
Id
technical
Document Type
technicalSelectionCriteria

Buyer, suppliers and contacts

Organisation 1
Id
GB-COH-04508773
Name
NATIONAL GRID UK LIMITED

Roles

buyer

Address

Region
UKI32
Locality
London
Postal Code
WC2N5EH
Country Name
United Kingdom
Street Address
1-3 Strand

Details

Classifications

Entry 1
Id
ELECTRICITY
Scheme
TED_CE_ACTIVITY
Description
Electricity

Identifier

Id
04508773
Scheme
GB-COH
Legal Name
NATIONAL GRID UK LIMITED

Contact

Name
Luke Williams
Organisation 2
Id
GB-FTS-111
Name
High Court

Roles

reviewBody

Address

Locality
London
Postal Code
WC2A 2LL
Country Name
United Kingdom
Street Address
Royal Courts of Justice, The Strand

Identifier

Legal Name
High Court
Organisation 3
Id
GB-COH-4508773
Name
NATIONAL GRID UK LIMITED

Roles

buyer

Address

Region
UKI32
Locality
LONDON
Postal Code
CT13 9NL
Country Name
United Kingdom
Street Address
Grand Buildings,1-3 Strand

Details

Identifier

Id
4508773
Scheme
GB-COH
Legal Name
NATIONAL GRID UK LIMITED

Contact

Name
National Grid
Organisation 4
Id
GB-COH-05119798
Name
6 ALPHA ASSOCIATES LIMITED

Roles

supplier

Address

Region
UK
Locality
Rickmansworth
Country Name
United Kingdom

Details

Scale
sme

Identifier

Id
05119798
Scheme
GB-COH
Legal Name
6 ALPHA ASSOCIATES LIMITED
Organisation 5
Id
GB-COH-01956748
Name
ABP MARINE ENVIRONMENTAL RESEARCH LIMITED

Roles

supplier

Address

Region
UK
Locality
London
Country Name
United Kingdom

Details

Scale
sme

Identifier

Id
01956748
Scheme
GB-COH
Legal Name
ABP MARINE ENVIRONMENTAL RESEARCH LIMITED
Organisation 6
Id
GB-COH-04977339
Name
AKER SOLUTIONS LIMITED

Roles

supplier

Address

Region
UK
Locality
Leeds
Country Name
United Kingdom

Details

Scale
large

Identifier

Id
04977339
Scheme
GB-COH
Legal Name
AKER SOLUTIONS LIMITED
Organisation 7
Id
GB-COH-01503799
Name
DNV SERVICES UK LIMITED

Roles

supplier

Address

Region
UK
Locality
London
Country Name
United Kingdom

Details

Scale
large

Identifier

Id
01503799
Scheme
GB-COH
Legal Name
DNV SERVICES UK LIMITED
Organisation 8
Id
GB-COH-01014622
Name
ENVIRONMENTAL RESOURCES MANAGEMENT LIMITED

Roles

supplier

Address

Region
UK
Locality
London
Country Name
United Kingdom

Details

Scale
large

Identifier

Id
01014622
Scheme
GB-COH
Legal Name
ENVIRONMENTAL RESOURCES MANAGEMENT LIMITED
Organisation 9
Id
GB-COH-04713320
Name
HYDROFIX LIMITED

Roles

supplier

Address

Region
UK
Locality
Helsby
Country Name
United Kingdom

Details

Scale
sme

Identifier

Id
04713320
Scheme
GB-COH
Legal Name
HYDROFIX LIMITED
Organisation 10
Id
GB-COH-02594504
Name
JACOBS U.K. LIMITED

Roles

supplier

Address

Region
UK
Locality
London
Country Name
United Kingdom

Details

Scale
large

Identifier

Id
02594504
Scheme
GB-COH
Legal Name
JACOBS U.K. LIMITED
Organisation 11
Id
GB-COH-01489779
Name
METOC LIMITED

Roles

supplier

Address

Region
UK
Locality
Brentwood
Country Name
United Kingdom

Details

Scale
sme

Identifier

Id
01489779
Scheme
GB-COH
Legal Name
METOC LIMITED
Organisation 12
Id
GB-COH-01243967
Name
MOTT MACDONALD LIMITED

Roles

supplier

Address

Region
UK
Locality
London
Country Name
United Kingdom

Details

Scale
large

Identifier

Id
01243967
Scheme
GB-COH
Legal Name
MOTT MACDONALD LIMITED
Organisation 13
Id
GB-COH-07861245
Name
OFFSHORE WIND CONSULTANTS LIMITED

Roles

supplier

Address

Region
UK
Locality
London
Country Name
United Kingdom

Details

Scale
large

Identifier

Id
07861245
Scheme
GB-COH
Legal Name
OFFSHORE WIND CONSULTANTS LIMITED
Organisation 14
Id
GB-COH-01312453
Name
OVE ARUP & PARTNERS LIMITED

Roles

supplier

Address

Region
UK
Locality
London
Country Name
United Kingdom

Details

Scale
large

Identifier

Id
01312453
Scheme
GB-COH
Legal Name
OVE ARUP & PARTNERS LIMITED
Organisation 15
Id
GB-COH-06430404
Name
RED PENGUIN ASSOCIATES LTD

Roles

supplier

Address

Region
UK
Locality
Portsmouth
Country Name
United Kingdom

Details

Scale
sme

Identifier

Id
06430404
Scheme
GB-COH
Legal Name
RED PENGUIN ASSOCIATES LTD
Organisation 16
Id
GB-COH-01465554
Name
TETRA TECH RPS ENERGY LIMITED

Roles

supplier

Address

Region
UK
Locality
Abingdon
Country Name
United Kingdom

Details

Scale
large

Identifier

Id
01465554
Scheme
GB-COH
Legal Name
TETRA TECH RPS ENERGY LIMITED
Organisation 17
Id
GB-COH-06955052
Name
TGS 4C OFFSHORE LIMITED

Roles

supplier

Address

Region
UK
Locality
Weybridge
Country Name
United Kingdom

Details

Scale
sme

Identifier

Id
06955052
Scheme
GB-COH
Legal Name
TGS 4C OFFSHORE LIMITED
Organisation 18
Id
GB-COH-SC296737
Name
WOOD GROUP UK LIMITED

Roles

supplier

Address

Region
UK
Locality
Aberdeen
Country Name
United Kingdom

Details

Scale
large

Identifier

Id
SC296737
Scheme
GB-COH
Legal Name
WOOD GROUP UK LIMITED
Organisation 19
Id
GB-COH-SC286421
Name
XODUS GROUP LIMITED

Roles

supplier

Address

Region
UK
Locality
Aberdeen
Country Name
United Kingdom

Details

Scale
large

Identifier

Id
SC286421
Scheme
GB-COH
Legal Name
XODUS GROUP LIMITED
Organisation 20
Id
GB-FTS-12367
Name
High Court

Roles

reviewBody

Address

Locality
London
Postal Code
WC2A 2LL
Country Name
United Kingdom
Street Address
Royal Courts of Justice

Identifier

Legal Name
High Court

Award information

Award 1
Id
079462-2025-1
Status
active

Suppliers

Supplier 1
Id
GB-COH-05119798
Name
6 ALPHA ASSOCIATES LIMITED

Related lots

3
Award 2
Id
079462-2025-2
Status
active

Suppliers

Supplier 1
Id
GB-COH-01956748
Name
ABP MARINE ENVIRONMENTAL RESEARCH LIMITED

Related lots

4
Award 3
Id
079462-2025-3
Status
active

Suppliers

Supplier 1
Id
GB-COH-04977339
Name
AKER SOLUTIONS LIMITED

Related lots

5
Award 4
Id
079462-2025-4
Status
active

Suppliers

Supplier 1
Id
GB-COH-01503799
Name
DNV SERVICES UK LIMITED
Award 5
Id
079462-2025-5
Status
active

Suppliers

Supplier 1
Id
GB-COH-01014622
Name
ENVIRONMENTAL RESOURCES MANAGEMENT LIMITED
Award 6
Id
079462-2025-6
Status
active

Suppliers

Supplier 1
Id
GB-COH-04713320
Name
HYDROFIX LIMITED
Award 7
Id
079462-2025-7
Status
active

Suppliers

Supplier 1
Id
GB-COH-02594504
Name
JACOBS U.K. LIMITED
Award 8
Id
079462-2025-8
Status
active

Suppliers

Supplier 1
Id
GB-COH-01489779
Name
METOC LIMITED
Award 9
Id
079462-2025-9
Status
active

Suppliers

Supplier 1
Id
GB-COH-01243967
Name
MOTT MACDONALD LIMITED

Related lots

5
Award 10
Id
079462-2025-10
Status
active

Suppliers

Supplier 1
Id
GB-COH-07861245
Name
OFFSHORE WIND CONSULTANTS LIMITED
Award 11
Id
079462-2025-11
Status
active

Suppliers

Supplier 1
Id
GB-COH-01312453
Name
OVE ARUP & PARTNERS LIMITED
Award 12
Id
079462-2025-12
Status
active

Suppliers

Supplier 1
Id
GB-COH-06430404
Name
RED PENGUIN ASSOCIATES LTD
Award 13
Id
079462-2025-13
Status
active

Suppliers

Supplier 1
Id
GB-COH-01465554
Name
TETRA TECH RPS ENERGY LIMITED

Related lots

3
Award 14
Id
079462-2025-14
Status
active

Suppliers

Supplier 1
Id
GB-COH-06955052
Name
TGS 4C OFFSHORE LIMITED

Related lots

1
Award 15
Id
079462-2025-15
Status
active

Suppliers

Supplier 1
Id
GB-COH-SC296737
Name
WOOD GROUP UK LIMITED

Related lots

5
Award 16
Id
079462-2025-16
Status
active

Suppliers

Supplier 1
Id
GB-COH-SC286421
Name
XODUS GROUP LIMITED

Contracts and changes

Entry 1
Id
079462-2025-1
Status
active
Award ID
079462-2025-1
Date Signed
6 Sept 2025, 00:00

Value

Amount
1,500,000
Currency
GBP
Entry 2
Id
079462-2025-2
Status
active
Award ID
079462-2025-2
Date Signed
2 Sept 2025, 00:00

Value

Amount
2,000,000
Currency
GBP
Entry 3
Id
079462-2025-3
Status
active
Award ID
079462-2025-3
Date Signed
2 Sept 2025, 00:00

Value

Amount
4,500,000
Currency
GBP
Entry 4
Id
079462-2025-4
Status
active
Award ID
079462-2025-4
Date Signed
6 Sept 2025, 00:00

Value

Amount
6,500,000
Currency
GBP
Entry 5
Id
079462-2025-5
Status
active
Award ID
079462-2025-5
Date Signed
14 Oct 2025, 00:00

Value

Amount
39,000,000
Currency
GBP
Entry 6
Id
079462-2025-6
Status
active
Award ID
079462-2025-6
Date Signed
5 Sept 2025, 00:00

Value

Amount
38,500,000
Currency
GBP
Entry 7
Id
079462-2025-7
Status
active
Award ID
079462-2025-7
Date Signed
2 Sept 2025, 00:00

Value

Amount
37,000,000
Currency
GBP
Entry 8
Id
079462-2025-8
Status
active
Award ID
079462-2025-8
Date Signed
2 Sept 2025, 00:00

Value

Amount
39,000,000
Currency
GBP
Entry 9
Id
079462-2025-9
Status
active
Award ID
079462-2025-9
Date Signed
7 Oct 2025, 00:00

Value

Amount
4,500,000
Currency
GBP
Entry 10
Id
079462-2025-10
Status
active
Award ID
079462-2025-10
Date Signed
2 Sept 2025, 00:00

Value

Amount
37,000,000
Currency
GBP
Entry 11
Id
079462-2025-11
Status
active
Award ID
079462-2025-11
Date Signed
2 Sept 2025, 00:00

Value

Amount
43,500,000
Currency
GBP
Entry 12
Id
079462-2025-12
Status
active
Award ID
079462-2025-12
Date Signed
2 Sept 2025, 00:00

Value

Amount
37,000,000
Currency
GBP
Entry 13
Id
079462-2025-13
Status
active
Award ID
079462-2025-13
Date Signed
2 Sept 2025, 00:00

Value

Amount
1,500,000
Currency
GBP
Entry 14
Id
079462-2025-14
Status
active
Award ID
079462-2025-14
Date Signed
24 Jun 2025, 00:00

Value

Amount
35,000,000
Currency
GBP
Entry 15
Id
079462-2025-15
Status
active
Award ID
079462-2025-15
Date Signed
9 Sept 2025, 00:00

Value

Amount
4,500,000
Currency
GBP
Entry 16
Id
079462-2025-16
Status
active
Award ID
079462-2025-16
Date Signed
2 Sept 2025, 00:00

Value

Amount
38,500,000
Currency
GBP

Recorded locations

  • Buyer location · London · UKI32 · WC2N5EH · United Kingdom
  • Delivery location · BE
  • Delivery location · DE
  • Delivery location · DK
  • Delivery location · ES
  • Delivery location · FR
  • Delivery location · IE
  • Delivery location · IS
  • Delivery location · NL
  • Delivery location · NO
  • Delivery location · SE
  • Delivery location · UK

Notice and amendment history

1 published notice version reviewed by ProcuraAxis.

1 VERSION
  1. ocds-h6vhtk-042bf0-2025-12-03T16:03:25Zcompiled ·