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PROCUREMENT OPPORTUNITY

MSSS Boxes Procurement

Sellafield Limited · Tender notice on Find a Tender

Tender information last checkedLast checked 27 Sept 2026, 05:11.

Opportunity overview

Procurement for the manufacture and supply of MSSS (Magnox Swarf Storage Silo) Box assemblies. Please refer to Sections 1 & 2 of the ITT Template CFP Document for further information.

Classification

  • CPV44400000 — Miscellaneous fabricated products and related items
  • CPV44613800 — Containers for waste material

Lots

  • Outer Box£41m
  • MSSS - Skip£32m
  • Box & Skip Lids£17m
  • Lot 4 - TEST PURPOSES ONLY£0

Documents and notices

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
C26453 (Atamis Reference)
Status
active
Procurement Method
selective
Procurement Method Details
Competitive flexible procedure
Main Procurement Category
goods
Above Threshold
Yes
How to submit
All interested suppliers should register against Atamis Project C26453 where they will be able to access all the tender documentation, submit clarifications and submit their tender response. URL: https://atamis-2464.my.site.com/s/Welcome
Expression Of Interest Deadline
15 Jul 2026, 12:00
Published risks
The safe retrieval and storage of Intermediate Level Waste (ILW) from the Magnox Swarf Storage Silo, one of the highest hazard facilities on the NDA estate, relies on bespoke 3m3 ILW boxes and their skips, which are integrated with existing legacy site infrastructure and designed to meet stringent safety, storage, transport and final disposal requirements. In previous contracts for the supply of 3m3 boxes, the difficulty of the required design materialised during, and jeopardised the performance of, those contracts. All Lot contracts in this Procurement will embed a New Product Introduction process which enables a phased approach to design and manufacturing in an attempt to address this known risk. However, this known risk could still jeopardise the performance of the contract and necessitate modifications to the Lot contracts.

Legal basis

Id
2023/54
Scheme
UKPGA

Procedure

Features
The Procurement will be conducted in accordance with the Procurement Act 2023 and will consist of a 2 Stage Process: Stage 1. PSQ - Conditions of Participation: This stage consists of a combination of pass/fail and scored questions. There will be a maximum of 6 suppliers per lot who will be invited to participate in the ITT stage. Stage 2. ITT: This stage is for those who are invited to tender following being down-selected to 1 of the 6 successful suppliers per lot. This stage contains a combination of technical and commercial scored question. For further details on the procurement process, please see Section 3 in the ITT Template CFP Document.

Covered By

GPA

Submission terms

Electronic Submission Policy
allowed

Languages

en

Enquiry period

Ends
26 Jun 2026, 12:00

Expected award period

Ends
23 Jun 2027, 23:59

Lot Details

Maximum Lots Bid Per Supplier
3
Maximum Lots Awarded Per Supplier
1
Award Criteria Details
The procurement is divided into three separate Lots: Lot 1 – Outer Boxes Lot 2 – MSSS Skips Lot 3 – Box and Skip Lids Each Lot will be awarded as a standalone Contract Order of Lot Award: Lot 2 - MSSS Skip Lot 1 - Outer Box Lot 3 - Box & Skip Lids The only circumstance in which a supplier may be awarded more than one Lot is if they are the sole compliant bidder for one of the Lots. Please refer to Section 2.5 of the ITT Template CFP Document for further information. *please note the number of Lots in the Tender Notice is detailed as 4, as this includes one Lot which has been created for internal testing purposes

Contract terms

Financial Terms
Contained within tender conditions (found in folder Appendix 8 Terms and Conditions)

Amendments

Entry 1
Description
The submission deadline for this opportunity has been extended to noon 15th July.
Id
064143-2026

Lots and requirements

Entry 1
Id
1
Title
Outer Box
Description
Outer Box: £35M-£41M
Status
active

Value

Including VAT
49,200,000
Amount
41,000,000
Currency
GBP

Award criteria

Criteria

Criterion 1
Type
quality
Name
Technical

Numbers

Entry 1
Number
69
Weight
percentageExact
Criterion 2
Type
cost
Name
Pricing

Numbers

Entry 1
Number
31
Weight
percentageExact

Second Stage

Minimum Candidates
1
Maximum Candidates
6

Selection criteria

Criteria

Criterion 1
Type
economic
Description
See PSQ criteria in Folder 1 PSQ Instruction
Criterion 2
Type
technical
Description
See PSQ criteria in Folder 1 PSQ Instruction
Criterion 3
Description
See PSQ criteria in Folder 1 PSQ Instructions
For Reduction
Yes

Suitability

Sme
Yes

Contract period

Starts
26 Jul 2027, 00:00
Ends
25 Jul 2034, 23:59
Entry 2
Id
2
Title
MSSS - Skip
Description
MSSS - Skip: £27M-£32M
Status
active

Value

Including VAT
38,400,000
Amount
32,000,000
Currency
GBP

Award criteria

Criteria

Criterion 1
Type
quality
Name
Technical
Description
See PSQ criteria in Folder 1 PSQ Instruction

Numbers

Entry 1
Number
69
Weight
percentageExact
Criterion 2
Type
cost
Name
Pricing

Numbers

Entry 1
Number
31
Weight
percentageExact

Second Stage

Minimum Candidates
1
Maximum Candidates
6

Selection criteria

Criteria

Criterion 1
Description
See PSQ criteria in Folder 1 PSQ Instruction
For Reduction
Yes

Suitability

Sme
Yes

Contract period

Starts
26 Jul 2027, 00:00
Ends
25 Jul 2034, 23:59
Entry 3
Id
3
Title
Box & Skip Lids
Description
Box & Skip Lids Range: £14-£17M
Status
active

Value

Including VAT
20,400,000
Amount
17,000,000
Currency
GBP

Award criteria

Criteria

Criterion 1
Type
quality
Name
Technical
Description
See PSQ criteria in Folder 1 PSQ Instruction

Numbers

Entry 1
Number
69
Weight
percentageExact
Criterion 2
Type
price
Name
pricing

Numbers

Entry 1
Number
31
Weight
percentageExact

Second Stage

Minimum Candidates
1
Maximum Candidates
6

Selection criteria

Criteria

Criterion 1
Description
See PSQ criteria in Folder 1 PSQ Instruction
For Reduction
Yes

Suitability

Sme
Yes

Contract period

Starts
26 Jul 2027, 00:00
Ends
25 Jul 2034, 23:59
Entry 4
Id
4
Title
Lot 4 - TEST PURPOSES ONLY
Description
Lot 4 - TEST PURPOSES ONLY. This Lot has been created as a test, please note there are only 3 Lots in this procurement
Status
active

Value

Including VAT
0.01
Amount
0.01
Currency
GBP

Award criteria

Criteria

Criterion 1
Type
cost
Name
Lot 4 - TEST PURPOSES ONLY

Numbers

Entry 1
Number
69
Weight
percentageExact
Criterion 2
Type
price
Name
Lot 4 - TEST PURPOSES ONLY

Numbers

Entry 1
Number
31
Weight
percentageExact

Second Stage

Minimum Candidates
1
Maximum Candidates
1

Selection criteria

Criteria

Criterion 1
Type
economic
Description
Lot 4 - TEST PURPOSES ONLY
Criterion 2
Type
technical
Description
Lot 4 - TEST PURPOSES ONLY
Criterion 3
Description
Lot 4 - TEST PURPOSES ONLY
For Reduction
Yes

Suitability

Sme
Yes

Contract period

Starts
26 Jul 2027, 00:00
Ends
25 Jul 2034, 23:59

Items and delivery

Item 1
Id
1
Related Lot
1

Additional Classifications

Entry 1
Scheme
CPV
Id
44613800
Description
Containers for waste material
Entry 2
Scheme
CPV
Id
44400000
Description
Miscellaneous fabricated products and related items

Delivery locations

Entry 1
Region
UKD11
Country
GB
Country Name
United Kingdom
Item 2
Id
2
Related Lot
2

Additional Classifications

Entry 1
Scheme
CPV
Id
44613800
Description
Containers for waste material
Entry 2
Scheme
CPV
Id
44400000
Description
Miscellaneous fabricated products and related items

Delivery locations

Entry 1
Region
UKD11
Country
GB
Country Name
United Kingdom
Item 3
Id
3
Related Lot
3

Additional Classifications

Entry 1
Scheme
CPV
Id
44613800
Description
Containers for waste material
Entry 2
Scheme
CPV
Id
44400000
Description
Miscellaneous fabricated products and related items

Delivery locations

Entry 1
Region
UKD11
Country
GB
Country Name
United Kingdom
Item 4
Id
4
Related Lot
4

Additional Classifications

Entry 1
Scheme
CPV
Id
44613800
Description
Containers for waste material
Entry 2
Scheme
CPV
Id
44400000
Description
Miscellaneous fabricated products and related items

Delivery locations

Entry 1
Region
UKD11
Country
GB
Country Name
United Kingdom

Published documents

Entry 1
Id
conflictOfInterest
Document Type
conflictOfInterest
Entry 2
Id
064143-2026
Document Type
tenderNotice
Notice Type
UK4
Description
Tender notice on Find a Tender
Published
8 Jul 2026, 12:13
Format
text/html

Buyer, suppliers and contacts

Organisation 1
Name
Sellafield Limited
Id
GB-PPON-PWYP-8439-MZWY

Identifier

Scheme
GB-PPON
Id
PWYP-8439-MZWY

Address

Street Address
Hinton House, Birchwood Park Avenue
Locality
Warrington
Postal Code
WA3 6GR
Country
GB
Country Name
United Kingdom
Region
UKD61

Contact

Name
Christopher Hart

Roles

buyer

Details

Classifications

Entry 1
Scheme
UK_CA_TYPE
Id
publicAuthoritySubCentralGovernment
Description
Public authority - sub-central government

Recorded locations

  • Buyer location · Warrington · UKD61 · WA3 6GR · United Kingdom
  • Delivery location · UKD11 · United Kingdom

Notice and amendment history

7 published notice versions reviewed by ProcuraAxis.

7 VERSIONS
  1. 003310-2026Preliminary market engagement notice on Find a Tender ·
  2. 030504-2026Preliminary market engagement notice on Find a Tender ·
  3. 032525-2026Preliminary market engagement notice on Find a Tender ·
  4. 047818-2026Tender notice on Find a Tender ·
  5. 052570-2026Tender notice on Find a Tender ·
  6. 063434-2026Tender notice on Find a Tender ·
  7. 064143-2026Tender notice on Find a Tender ·