✓Tender information last checkedLast checked 9 Oct 2026, 16:18.
Opportunity overview
National Grid Electricity Transmission Plc is seeking experienced and suitably qualified suppliers capable of delivering a fully integrated security solution for critical national infrastructure sites at Walham and Pentir. The requirement is divided into two separate Lots: Lot 1 (Walham) and Lot 2 (Pentir). Suppliers may submit tenders for one or both Lots; however, no supplier will be awarded more than one Lot.
Further details in relation to the scope are set out in the Instructions to Tenderers.
Classification
CPV32235000 — Closed-circuit surveillance system
CPV34928200 — Fences
CPV35120000 — Surveillance and security systems and devices
CPV44221300 — Gates
CPV45220000 — Engineering works and construction works
CPV45232220 — Substation construction work
CPV45312100 — Fire-alarm system installation work
CPV45312200 — Burglar-alarm system installation work
CPV45314000 — Installation of telecommunications equipment
CPV45340000 — Fencing, railing and safety equipment installation work
Please complete the Microsoft Form to submit an Expression of Interest to receive tender notice documentation.
The information collected will be used as part of the first-stage SAP Ariba onboarding process for National Grid. All fields are mandatory to facilitate Supplier Lifecycle and Performance (SLP) pre-registration and should be completed accurately and in full.
Following receipt of expressions of interest, an Ariba profile will be created and a questionnaire issued via Ariba to conclude onboarding.
In addition, your organisation must be registered on the Central Digital Platform (CDP). If you have not yet registered, please do so using the following link: https://supplierregistration.cabinetoffice.gov.uk/loginOpen source ↗
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
WS5688383780
Status
active
Procurement Method
selective
Procurement Method Details
Competitive flexible procedure
Main Procurement Category
works
Above Threshold
Yes
How to submit
Suppliers wishing to participate in this opportunity should complete the Expression of Interest link.
Suppliers are requested to register their interest 16th October 2026 to enable Ariba onboarding and secure access to the documents. Registration is an administrative access step and is not an evaluated stage. Suppliers that miss this date should contact National Grid promptly. Access may be facilitated where reasonably practicable before the submission deadline.
National Grid Procurement will issue the tender documents via SAP Ariba (https://service.ariba.com) to those suppliers that have expressed their interest in response to this notice.
National Grid intends to conduct a Competitive Flexible Procedure with a multi-stage process. Suppliers are requested to register their interest to enable secure onboarding to National Grid's Ariba sourcing platform. Following onboarding, National Grid will issue the confidential procurement documents through Ariba, This will be a qualification questionnaire and associated documents.
Suppliers must submit a completed request to participate by the deadline stated in the notice. National Grid will assess responses against the published conditions of participation and, where applicable, the published criteria for limiting supplier numbers. Suppliers selected to proceed will then be invited to submit tenders through Ariba.
The multi-stage includes:
Stage 1: Pre-qualification
Stage 2: Request for Proposal (RFP) including evaluation, optional negotiation and resubmission
Further details are included in the Instructions to Tenderers and associated procurement documents which will be issued via ARIBA.
Special regime
utilities
Submission terms
Electronic Submission Policy
allowed
Languages
en
Expected award period
Ends
1 Feb 2027, 23:59
Lot Details
Maximum Lots Awarded Per Supplier
1
Award Criteria Details
Tenderers may submit bids for one or both Lots; however, a Tenderer may only be awarded a maximum of one Lot. Further details of the Lot award methodology are provided within the Instructions to Tenderers.
Lots and requirements
Entry 1
Id
1
Title
Lot 1. ISS Walham, Gloucestershire
Description
National Grid Electricity Transmission Plc is seeking an experienced and suitably qualified supplier capable of delivering a fully integrated security solution for a critical national infrastructure site at Walham.
Status
active
Has Options
Yes
Value
Including VAT
10,800,000
Amount
9,000,000
Currency
GBP
Award criteria
Criteria
Criterion 1
Type
quality
Name
Technical
Numbers
Entry 1
Number
75
Weight
percentageExact
Criterion 2
Type
cost
Name
Commercial
Numbers
Entry 1
Number
25
Weight
percentageExact
Selection criteria
Criteria
Criterion 1
Type
economic
Description
Suppliers may be required to demonstrate that they have the legal and financial capacity to perform the contract. This will include demonstrating sufficient financial standing, taking account of the nature, complexity, value, duration and risk profile of the contract, and an ability to meet all applicable legal, statutory and regulatory requirements relevant to its performance. The detailed conditions of participation, supporting evidence requirements, assessment methodology and any applicable minimum thresholds will be set out in the Instructions to Tenderers and associated procurement documentation made available to Tenderers on ARIBA.
Criterion 2
Type
technical
Description
Suppliers will be required to demonstrate the technical ability, relevant experience, competent resources, systems and organisational capability necessary to perform the contract. This includes meeting National Grid's applicable standard supplier requirements and all project-specific technical requirements. The detailed conditions of participation, supporting evidence requirements, assessment methodology and any applicable minimum thresholds will be set out in the Instructions to Tenderers and associated procurement documentation made available to Tenderers on ARIBA. References to particular qualifications, accreditations or standards include permitted equivalents.
Criterion 3
Description
There is no maximum number of suppliers invited to participate in Stage 1: Prequalification.
There will be a maximum number of suppliers invited to Stage 2: Request to Participate. The criteria used to select suppliers will be set out in the procurement documentation issued via Ariba. This stage will include additional pass/fail questions, followed by more detailed scored questions that will be used to assess and rank suppliers. Only the highest-ranking suppliers, up to the specified maximum number, will be invited to progress.
For Reduction
Yes
Contract period
Starts
17 May 2027, 00:00
Ends
14 Jan 2028, 23:59
Options
Description
The Contract is based on the NEC4 ECC form of contract, which includes the right for the Project Manager to issue instructions to the Contractor which may have the impact of changing Key Dates/Completion Dates/the total of the Prices. Not all such instructions constitute modifications within the meaning set out in the Procurement Act 2023, but National Grid note the following Project Manager's instructions which may, depending on their content, give rise to modifications under the Procurement Act 2023 are permitted modifications (para 11 Schedule 8):
• A Project Manager's instruction changing the Scope/ or the boundaries of the Site (clause 14.3, 60.1(1));
• A Project Manager's instruction to omit any part(s) of the Scope (clause Z23).
The Client may also in accordance with ECI clause X22 i) issue a notice to proceed instructing the Contractor to complete Stage 2 of the works or b) issue an instruction that a notice to proceed to Stage 2 will not be issued and that the contract will terminate/ Stage 2 of the works will be removed from the Scope.
This procurement is for the appointment of a contractor under NEC4 Engineering and Construction Contract Option C with Secondary Option X22 Early Contractor Involvement. The successful Contractor will initially be appointed to undertake Stage One ECI activities including design development, buildability assessments, risk reduction, programme optimisation and preparation of an open-book Target Cost.
Following completion of Stage One the Client will determine whether to issue a notice to proceed for Stage Two construction activities. Progression to Stage Two is subject to agreement of the Target Cost, satisfactory risk reduction outcomes, business case approval and funding confirmation. If a notice that the works will not proceed to Stage Two is issued, the contract will terminate/Stage Two of the works will be removed from the Scope.
Entry 2
Id
2
Title
Lot 2. ISS Pentir, Gwynedd
Description
National Grid Electricity Transmission Plc is seeking an experienced and suitably qualified supplier capable of delivering a fully integrated security solution for a critical national infrastructure site at Pentir.
Status
active
Has Options
Yes
Value
Including VAT
14,400,000
Amount
12,000,000
Currency
GBP
Award criteria
Criteria
Criterion 1
Type
quality
Name
Technical
Numbers
Entry 1
Number
75
Weight
percentageExact
Criterion 2
Type
cost
Name
Commercial
Numbers
Entry 1
Number
25
Weight
percentageExact
Selection criteria
Criteria
Criterion 1
Type
economic
Description
Suppliers may be required to demonstrate that they have the legal and financial capacity to perform the contract. This will include demonstrating sufficient financial standing, taking account of the nature, complexity, value, duration and risk profile of the contract, and an ability to meet all applicable legal, statutory and regulatory requirements relevant to its performance. The detailed conditions of participation, supporting evidence requirements, assessment methodology and any applicable minimum thresholds will be set out in the Instructions to Tenderers and associated procurement documentation made available to Tenderers on ARIBA.
Criterion 2
Type
technical
Description
Suppliers will be required to demonstrate the technical ability, relevant experience, competent resources, systems and organisational capability necessary to perform the contract. This includes meeting National Grid's applicable standard supplier requirements and all project-specific technical requirements. The detailed conditions of participation, supporting evidence requirements, assessment methodology and any applicable minimum thresholds will be set out in the Instructions to Tenderers and associated procurement documentation made available to Tenderers on ARIBA. References to particular qualifications, accreditations or standards include permitted equivalents.
Criterion 3
Description
There is no maximum number of suppliers invited to participate in Stage 1: Prequalification.
There will be a maximum number of suppliers invited to Stage 2: Request to Participate. The criteria used to select suppliers will be set out in the procurement documentation issued via Ariba. This stage will include additional pass/fail questions, followed by more detailed scored questions that will be used to assess and rank suppliers. Only the highest-ranking suppliers, up to the specified maximum number, will be invited to progress.
For Reduction
Yes
Contract period
Starts
17 May 2027, 00:00
Ends
14 Jan 2028, 23:59
Options
Description
The Contract is based on the NEC4 ECC form of contract, which includes the right for the Project Manager to issue instructions to the Contractor which may have the impact of changing Key Dates/Completion Dates/the total of the Prices. Not all such instructions constitute modifications within the meaning set out in the Procurement Act 2023, but National Grid note the following Project Manager's instructions which may, depending on their content, give rise to modifications under the Procurement Act 2023 are permitted modifications (para 11 Schedule 8):
• A Project Manager's instruction changing the Scope/ or the boundaries of the Site (clause 14.3, 60.1(1));
• A Project Manager's instruction to omit any part(s) of the Scope (clause Z23).
The Client may also in accordance with ECI clause X22 i) issue a notice to proceed instructing the Contractor to complete Stage 2 of the works or b) issue an instruction that a notice to proceed to Stage 2 will not be issued and that the contract will terminate/ Stage 2 of the works will be removed from the Scope.
This procurement is for the appointment of a contractor under NEC4 Engineering and Construction Contract Option C with Secondary Option X22 Early Contractor Involvement. The successful Contractor will initially be appointed to undertake Stage One ECI activities including design development, buildability assessments, risk reduction, programme optimisation and preparation of an open-book Target Cost.
Following completion of Stage One the Client will determine whether to issue a notice to proceed for Stage Two construction activities. Progression to Stage Two is subject to agreement of the Target Cost, satisfactory risk reduction outcomes, business case approval and funding confirmation. If a notice that the works will not proceed to Stage Two is issued, the contract will terminate/Stage Two of the works will be removed from the Scope.
Items and delivery
Item 1
Id
1
Related Lot
1
Additional Classifications
Entry 1
Scheme
CPV
Id
32235000
Description
Closed-circuit surveillance system
Entry 2
Scheme
CPV
Id
34928200
Description
Fences
Entry 3
Scheme
CPV
Id
35120000
Description
Surveillance and security systems and devices
Entry 4
Scheme
CPV
Id
44221300
Description
Gates
Entry 5
Scheme
CPV
Id
45220000
Description
Engineering works and construction works
Entry 6
Scheme
CPV
Id
45232220
Description
Substation construction work
Entry 7
Scheme
CPV
Id
45312100
Description
Fire-alarm system installation work
Entry 8
Scheme
CPV
Id
45312200
Description
Burglar-alarm system installation work
Entry 9
Scheme
CPV
Id
45314000
Description
Installation of telecommunications equipment
Entry 10
Scheme
CPV
Id
45340000
Description
Fencing, railing and safety equipment installation work
Entry 11
Scheme
CPV
Id
79415200
Description
Design consultancy services
Entry 12
Scheme
CPV
Id
79933000
Description
Design support services
Delivery locations
Entry 1
Region
UKK
Country
GB
Country Name
United Kingdom
Item 2
Id
2
Related Lot
2
Additional Classifications
Entry 1
Scheme
CPV
Id
32235000
Description
Closed-circuit surveillance system
Entry 2
Scheme
CPV
Id
34928200
Description
Fences
Entry 3
Scheme
CPV
Id
35120000
Description
Surveillance and security systems and devices
Entry 4
Scheme
CPV
Id
44221300
Description
Gates
Entry 5
Scheme
CPV
Id
45220000
Description
Engineering works and construction works
Entry 6
Scheme
CPV
Id
45232220
Description
Substation construction work
Entry 7
Scheme
CPV
Id
45312100
Description
Fire-alarm system installation work
Entry 8
Scheme
CPV
Id
45312200
Description
Burglar-alarm system installation work
Entry 9
Scheme
CPV
Id
45314000
Description
Installation of telecommunications equipment
Entry 10
Scheme
CPV
Id
45340000
Description
Fencing, railing and safety equipment installation work
Entry 11
Scheme
CPV
Id
79415200
Description
Design consultancy services
Entry 12
Scheme
CPV
Id
79933000
Description
Design support services
Delivery locations
Entry 1
Region
UKL
Country
GB
Country Name
United Kingdom
Published documents
Entry 1
Id
conflictOfInterest
Document Type
conflictOfInterest
Description
Not published
Entry 2
Id
L-1
Document Type
biddingDocuments
Description
Please complete the Microsoft Form to submit an Expression of Interest to receive tender notice documentation.
The information collected will be used as part of the first-stage SAP Ariba onboarding process for National Grid. All fields are mandatory to facilitate Supplier Lifecycle and Performance (SLP) pre-registration and should be completed accurately and in full.
Following receipt of expressions of interest, an Ariba profile will be created and a questionnaire issued via Ariba to conclude onboarding.
In addition, your organisation must be registered on the Central Digital Platform (CDP). If you have not yet registered, please do so using the following link: https://supplierregistration.cabinetoffice.gov.uk/login
Buyer location · London · UKI32 · WC2N 5EH · United Kingdom
Delivery location · UKK · United Kingdom
Delivery location · UKL · United Kingdom
Notice and amendment history
2 published notice versions reviewed by ProcuraAxis.
2 VERSIONS
1
078250-2026Planned procurement notice on Find a Tender ·
2
095732-2026Tender notice on Find a Tender ·
PROCURAAXIS ANALYSIS
ProcuraAxis Analysis
Our approved analysis of the opportunity appears below the official tender information.
ANALYSIS PREVIEW
Opportunity intelligence at a glance
National Grid Electricity Transmission Plc is seeking suppliers for integrated security solution works at critical national infrastructure sites: Walham, Gloucestershire (Lot 1) and Pentir, Gwynedd (Lot 2). Suppliers can tender for either or both lots, but may be awarded no more than one lot. The opportunity is open and uses an expression-of-interest and onboarding route before tender documentation is issued.
Who this may suit
Best suited to experienced, suitably qualified security infrastructure contractors able to deliver integrated surveillance, access-control/perimeter and associated installation works for critical national infrastructure sites.
Key points identified
Supplier experience and capabilityExperienced and suitably qualified supplier capable of delivering a fully integrated security solution for a critical national infrastructure site.Evidence: Opportunity description and both lot descriptions state that National Grid is seeking an 'experienced and suitably qualified supplier' capable of delivering a fully integrated security solution.
Expression of InterestComplete the Microsoft Form to submit an Expression of Interest and receive tender documentation.Evidence: Bidding-document title: 'Please complete the Microsoft Form to submit an Expression of Interest to receive tender notice documentation.'
SAP Ariba onboardingComplete all mandatory form fields accurately and in full for Supplier Lifecycle and Performance pre-registration; an Ariba profile and questionnaire will then be issued.Evidence: Bidding-document title states that all fields are mandatory for SLP pre-registration and that an Ariba profile and questionnaire will be issued following receipt of expressions of interest.
96% approved-analysis confidence6 supplier criteria identified4 risks or unknowns
ProcuraAxis structures information found in published procurement records, checks the result for consistency and publishes only approved analysis. Confidence describes the completeness and consistency of the available source information; it is not a guarantee of eligibility or contract award.
National Grid Electricity Transmission Plc is seeking suppliers for integrated security solution works at critical national infrastructure sites: Walham, Gloucestershire (Lot 1) and Pentir, Gwynedd (Lot 2). Suppliers can tender for either or both lots, but may be awarded no more than one lot. The opportunity is open and uses an expression-of-interest and onboarding route before tender documentation is issued.
Who this may suit
Best suited to experienced, suitably qualified security infrastructure contractors able to deliver integrated surveillance, access-control/perimeter and associated installation works for critical national infrastructure sites.
Key deliverables
Integrated security solution for Walham (Lot 1)
Integrated security solution for Pentir (Lot 2)
Security-system and associated infrastructure design, installation and construction works
SUPPLIER REQUIREMENTS
6 criteria identified
Supplier experience and capability
97% confidence
Experienced and suitably qualified supplier capable of delivering a fully integrated security solution for a critical national infrastructure site.
View supporting evidence
Opportunity description and both lot descriptions state that National Grid is seeking an 'experienced and suitably qualified supplier' capable of delivering a fully integrated security solution.
Expression of Interest
99% confidence
Complete the Microsoft Form to submit an Expression of Interest and receive tender documentation.
View supporting evidence
Bidding-document title: 'Please complete the Microsoft Form to submit an Expression of Interest to receive tender notice documentation.'
SAP Ariba onboarding
98% confidence
Complete all mandatory form fields accurately and in full for Supplier Lifecycle and Performance pre-registration; an Ariba profile and questionnaire will then be issued.
View supporting evidence
Bidding-document title states that all fields are mandatory for SLP pre-registration and that an Ariba profile and questionnaire will be issued following receipt of expressions of interest.
Central Digital Platform registration
99% confidence
Organisation must be registered on the Central Digital Platform (CDP).
View supporting evidence
Bidding-document title: 'your organisation must be registered on the Central Digital Platform (CDP).'
Lot bidding and award restriction
99% confidence
Suppliers may tender for one or both lots, but no supplier will be awarded more than one lot.
View supporting evidence
Opportunity description explicitly states this restriction.
Other eligibility criteria
94% confidence
Unknown.
View supporting evidence
No further eligibility criteria are supplied.
COMMERCIAL AND DELIVERY
Contract intelligence
Commercial
Total stated value
96% confidence
Up to £21,000,000.
View supporting evidence
Opportunity value_max is GBP 21,000,000.
Lot 1 stated value
98% confidence
£9,000,000.
View supporting evidence
Lot 1 value_amount is GBP 9,000,000.
Lot 2 stated value
98% confidence
£12,000,000.
View supporting evidence
Lot 2 value_amount is GBP 12,000,000.
Contract term and payment terms
99% confidence
Unknown.
View supporting evidence
No contract dates, term, pricing model or payment terms are supplied.
Delivery
Lot 1 location
96% confidence
Walham, Gloucestershire, United Kingdom (UKK delivery region).
View supporting evidence
Lot 1 title identifies Walham, Gloucestershire; supplied delivery location includes region UKK.
Lot 2 location
96% confidence
Pentir, Gwynedd, United Kingdom (UKL delivery region).
View supporting evidence
Lot 2 title identifies Pentir, Gwynedd; supplied delivery location includes region UKL.
Delivery timetable
99% confidence
Unknown.
View supporting evidence
No contract start, end or lot submission dates are supplied.
PROCEDURE
How to respond
Status
99% confidence
Open.
View supporting evidence
Process display_status is 'open' and source_status is 'active'.
Process procurement_method is 'selective' and procurement_method_details is 'Competitive flexible procedure'.
Notice type
99% confidence
Tender notice on Find a Tender.
View supporting evidence
Process notice_type is 'Tender notice on Find a Tender'.
Submission deadline
99% confidence
Unknown.
View supporting evidence
Process and both lots have null submission_deadline values.
RISKS AND UNKNOWNS
Points requiring attention
No published submission deadline
99% confidence
The opportunity is open, but no submission deadline is supplied for the overall process or either lot.
View supporting evidence
submission_deadline is null at process level and for Lots 1 and 2.
Single-lot award cap
99% confidence
Bidding for both lots does not permit award of both lots; a supplier can receive no more than one lot.
View supporting evidence
Opportunity description explicitly states that no supplier will be awarded more than one lot.
Onboarding dependency
94% confidence
Access to tender documentation depends on completing the Expression of Interest process and subsequent Ariba onboarding questionnaire.
View supporting evidence
Bidding-document title describes the EOI form, profile creation and questionnaire process before tender documentation access/onboarding completion.
Scope detail limitation
99% confidence
Detailed scope is not included in the supplied notice data and is stated to be in the Instructions to Tenderers.
View supporting evidence
Opportunity description: 'Further details in relation to the scope are set out in the Instructions to Tenderers.'
ProcuraAxis analysis supplements, but does not replace, the original notice and tender documents. Always verify eligibility, deadlines and commercial terms with the issuing authority.
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