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Official procurement procedure

Decommissioning Nuclear Waste Partnership (DNWP)

Building construction work
Business and management consultancy and related services
Business and management consultancy services
+22 more
North West (UKD11)
Published value
Not published
Submission deadline Not published
Lots published4
Procurement Executive Summary
AI & Search Synopsis
Generated from official OCDS record
Tenderline Synopsis: Sellafield Limited: "Decommissioning Nuclear Waste Partnership (DNWP)". Published status: complete. Published value: Value not published. 4 published lots. Submission deadline not published. See the official notice for participation instructions.
Contracting AuthoritySellafield LimitedScope & CategoriesNot publishedSubmission Window
complete
No deadline published
Submission GatewayDirect notice routeLegal Basis & RegimeStandard procurementEstimated Value (exc. VAT)Not published
Bidder Intelligence · Authority Profile: Sellafield Limited
Market Analytics
View Authority Profile →
Derived from OCDS awards & bid statistics
Published history for Sellafield Limited. These figures describe retained records, not a forecast of bids or a measure of buyer bias.
Average Price Reduction
Not availableInsufficient comparable data
Requires at least 5 comparable procedures
Competition Density
2.7Bids / Report
48.6% of reports have one bid
Supplier ConcentrationNo estimate
Insufficient attributable awardsNo concentration estimate available
Payment Terms
Check noticePublished terms
Payment obligations depend on the applicable regime and contract. Consult the official documents.
Coverage: 37 active published awards; 37 bid reports (which may be per lot). Supplier values exclude multi-supplier awards, frameworks and DPS, and use GBP only. They are published award values, not payments. Price reduction compares single-lot, single-award, single-supplier GBP procedures with explicitly non-framework/non-DPS status; increases remain in the average. Unpublished data stays unknown. Awarded suppliers are winners, not all bidders.
Procedure terms
Contracting AuthoritySellafield Limited
Procedure methodNot published
Procurement categoryNot published
Statuscomplete
Framework / DPSFramework
CompetitionNot published
Above thresholdNot published
Legal basisNot published
Tender period startsNot published
Clarification deadlineNot published
Electronic submissionNot published
Submission languagesNot published
Published3 Nov 2025, 09:20 GMT
Last source update3 Nov 2025, 09:20 GMT
Recurring procurementNot published
ClassificationBuilding construction work, Business and management consultancy and related services, Business and management consultancy services, Construction consultancy services, Construction equipment, Construction work, Decommissioning services, Demolition, site preparation and clearance work, Design consultancy services, Design support services, Designs, Electrical engineering installation works, Engineering design services, Engineering design services for mechanical and electrical installations for buildings, Engineering design services for the construction of civil engineering works, Engineering works and construction works, Industrial machinery, Mechanical engineering installation works, Safety cases, Site preparation and clearance work, Site preparation work, Site-clearance work, Waste analysis services, Waste disposal site construction work
Delivery area
North West (UKD11)
OCIDocds-h6vhtk-03ebdd
What is being bought
Sellafield Ltd is responsible for safely operating and decommissioning Europe's largest, most complex nuclear site, which is home to legacy nuclear facilities that are some of the most hazardous buildings in Western Europe. Sellafield Ltd, through the Decommissioning and Nuclear Waste Partners (DNWP) Framework opportunity, has brought together four partners across four Lots to provide a full suite of expertise and support to deliver decommissioning activities and projects, including asset care. Delivery will be across nuclear facilities on the Sellafield licenced site that are in mix of states including operational, post operation clean out (POCO), decommissioning and demolition. Consequently, the scope of work for the DNWP Framework will include construction delivery, demolition related works, associated technical services (including safety case and design) and waste management with the scope aligned across the following four Lots:<br/><br/><br/>• Lot 1 Remediation Partners<br/>• Lot 2 Pond Retrievals Partner<br/>• Lot 3 Silos Retrievals Partner<br/>• Lot 4 Integrated Nuclear Waste Partner
What changed
From the official release history
  1. Status changed to complete
    3 Nov 2025, 09:20 GMT
  2. Official notice release published
    3 Nov 2025, 09:20 GMT
  3. Buyer information updated
    3 Nov 2025, 09:20 GMT
  4. tender value changed
    14 Aug 2023, 14:21 BST
  5. Status changed to published status
    14 Aug 2023, 14:21 BST
  6. Official notice release published
    14 Aug 2023, 14:21 BST
  7. Submission deadline changed to published date
    14 Aug 2023, 14:21 BST
  8. Published value updated to £4,600,000,000
    31 Jul 2023, 17:39 BST
  9. Status changed to active
    31 Jul 2023, 17:39 BST
  10. Official notice release published
    31 Jul 2023, 17:39 BST
  11. Submission deadline changed to 9 Oct 2023, 16:00 BST
    31 Jul 2023, 17:39 BST
  12. Buyer information updated
    31 Jul 2023, 17:39 BST
Lots and requirements (4)
Published by the contracting authority
  • Lot 1 · #1
    Lot 1 - Remediation
    cancelled
    Published valueNot published
    Lot 1 will consist of two Remediation Partners. The Remediation value stream will have a growing scope as more and more of the Sellafield site moves from operations into remediation and decommissioning. This will be reflected in a growing investment over the lifetime of the DNWP framework, subject to annual public sector funding constraints. Remediation is about cleaning up the Sellafield site over the next century as safely and cost-effectively as possible. As an asset reaches the end of its operational life, remediation addresses the nuclear, radiological and conventional risks through post-operation clean-out, decommissioning, demolition and land remediation. The focus of waste informed nuclear decommissioning up to 2040 includes clearing redundant buildings to make land available for beneficial re-use and preparing to decommission the UK’s oldest nuclear reactor complexes and nuclear fuel handling facilities.
    Contract periodNot published
    EligibilityNot published
    Options / renewalNot published
  • Lot 2 · #2
    Lot 2 - Retrievals Ponds
    cancelled
    Published valueNot published
    Lot 2 will consist of a Ponds Partner, encompassing both the First Generation Magnox Storage Pond (“FGMSP”) , associated buildings and the Pile Fuel Storage Pond (“PFSP”). and associated buildings.<br/><br/>Legacy Ponds is the Operating Unit (OU) organisation within the Retrievals value stream of Sellafield that is charged with managing the programmes of work for the FGMSP and the PFSP. These are two legacy nuclear storage ponds that retain significant radiological materials and hazards that require timely mitigation, principally by retrieving the materials to downstream treatment and storage/disposal facilities while maintaining a safe and secure environment.
    Contract periodNot published
    EligibilityNot published
    Options / renewalNot published
  • Lot 3 · #3
    Lot 3 - Retrievals Silos
    cancelled
    Published valueNot published
    Lot 3 will consist of a Silos Partner, encompassing both the Magnox Swarf Storage Silo (“MSSS”) and Pile Fuel Cladding Silo (“PFCS”). The Retrievals value stream is responsible for managing the site’s major hazard and risk reduction programme: retrieving the waste from Sellafield’s four highest risk legacy storage facilities. These buildings have traditionally presented some of the greatest challenges on the Sellafield site, but major progress is now being made on retrieving waste from the two ponds and the MSSS, with final preparations being made to retrieve waste from the PFCS.
    Contract periodNot published
    EligibilityNot published
    Options / renewalNot published
  • Lot 4 · #4
    Lot 4 - Integrated Nuclear Waste
    cancelled
    Published valueNot published
    Lot 4 will consist of a single enterprise-wide Integrated Nuclear Waste Partner. This Nuclear Waste Partner will work through the Waste Operating Unit (“Waste OU”). The Waste OU is part of the Remediation Portfolio, it includes a dedicated programme providing enabling activities across the Sellafield enterprise with major customers being the DNWP Remediation & Retrievals Partners.
    Contract periodNot published
    EligibilityNot published
    Options / renewalNot published
Timeline
  1. Procedure published
    3 Nov 2025, 09:20 GMT
  2. Award active
    Not published · Not published
  3. Award active
    Not published · Not published
  4. Award active
    Not published · Not published
  5. Award active
    Not published · Not published
  6. Award active
    Not published · Not published
  7. Contract active
    Signed 30 Oct 2025, 00:00 GMT · £1,000,000,000
  8. Contract active
    Signed 30 Oct 2025, 00:00 GMT · £1,600,000,000
  9. Contract active
    Signed 30 Oct 2025, 00:00 GMT · £1,000,000,000
  10. Contract active
    Signed 30 Oct 2025, 00:00 GMT · £1,000,000,000
  11. Contract active
    Signed 30 Oct 2025, 00:00 GMT · £1,600,000,000
Commercial outcome and competition
Awards
Amentum Clean Energy Limited
Not published · Not published · active
A2R (Altrad Support Services Limited and AtkinsRéalis UK Limited)
Not published · Not published · active
TDA (AtkinsRéalis UK, Amentum Clean Energy, Westinghouse Electric Company UK)
Not published · Not published · active
NDS (Altrad Support Services Ltd, Cavendish Nuclear Ltd, Shepley Engineers Ltd)
Not published · Not published · active
A2R (Altrad Support Services Limited and AtkinsRéalis UK Limited)
Not published · Not published · active
Contracts
Lot 1 - Remediation
£1,000,000,000 · signed 30 Oct 2025, 00:00 GMT · active
Lot 1 - Remediation
£1,600,000,000 · signed 30 Oct 2025, 00:00 GMT · active
Lot 2 - Retrievals Ponds
£1,000,000,000 · signed 30 Oct 2025, 00:00 GMT · active
Lot 3 - Retrievals Silos
£1,000,000,000 · signed 30 Oct 2025, 00:00 GMT · active
Lot 4 - Integrated Nuclear Waste
£1,600,000,000 · signed 30 Oct 2025, 00:00 GMT · active
Bid statistics
bids: 5 (lot 1)
bids: 5 (lot 1)
electronicBids: 5 (lot 1)
electronicBids: 5 (lot 1)
foreignBidsFromEU: 0 (lot 1)
foreignBidsFromEU: 0 (lot 1)
foreignBidsFromNonEU: 0 (lot 1)
foreignBidsFromNonEU: 0 (lot 1)
smeBids: 0 (lot 1)
smeBids: 0 (lot 1)
bids: 1 (lot 2)
electronicBids: 1 (lot 2)
foreignBidsFromEU: 0 (lot 2)
foreignBidsFromNonEU: 0 (lot 2)
smeBids: 0 (lot 2)
bids: 1 (lot 3)
electronicBids: 1 (lot 3)
foreignBidsFromEU: 0 (lot 3)
foreignBidsFromNonEU: 0 (lot 3)
smeBids: 0 (lot 3)
bids: 3 (lot 4)
electronicBids: 3 (lot 4)
foreignBidsFromEU: 0 (lot 4)
foreignBidsFromNonEU: 0 (lot 4)
smeBids: 0 (lot 4)
Buyer and organisations in this procedure

Sellafield Limited

Contracting authority GB-FTS-146205
View buyer profile

  • Sellafield Limited
    buyer

    01002607
    Hinton House, Birchwood Park Avenue, Warrington, UKD1, WA3 6GR
    michelle.a.edmondson@sellafieldsites.com

  • A2R (Altrad Support Services Limited and AtkinsRéalis UK Limited)
    supplier

    n/a
    Rutherford House, Westlakes Science Park, Whitehaven, UKD11, CA24 3JZ

  • Amentum Clean Energy Limited
    supplier

    01120437
    305 Bridgewater Place Birchwood Park, Birchwood, Warrington, UKD6, WA36XF

  • NDS (Altrad Support Services Ltd, Cavendish Nuclear Ltd, Shepley Engineers Ltd)
    supplier

    n/a
    Units 6 & 7 Lyncastle Way Appleton Thorne Trading Estate Warrington, Warrington, UKD61, WA4 4ST

  • Royal Courts Of Justice
    reviewBody

    Strand, London, WC2A 2LL
    rcj.dco@justice.gov.uk

  • TDA (AtkinsRéalis UK, Amentum Clean Energy, Westinghouse Electric Company UK)
    supplier

    Rutherford House, Westlakes Science Park, Moor Row, UKD11, CA24 3HY
Documents (0)
Official links; attachments are not copied
No data
No linked documents are published
Related procedures (0)
No data
No related procedures published