Notice Information
Notice Title
Decommissioning Nuclear Waste Partnership
Notice Description
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: Lot 1 Remediation Partners Lot 2 Pond Retrievals Partner Lot 3 Silos Retrievals Partner Lot 4 Integrated Nuclear Waste Partner Lot 1 will consist of two Remediation Partners. 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. 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. 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. 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. 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.
Notice Details
Publication & Lifecycle
- Open Contracting ID
- ocds-b5fd17-a4d8dd6b-a51d-430d-89f1-8a04c1fac9fb
- Publication Source
- Contracts Finder
- Latest Notice
- https://www.contractsfinder.service.gov.uk/Notice/6d4229ba-fc62-49f3-a066-5a41982c23bf
- Current Stage
- Award
- All Stages
- Award
Procurement Classification
- Notice Type
- Award Notice
- Procurement Type
- Standard
- Procurement Category
- Works
- Procurement Method
- Selective
- Procurement Method Details
- Restricted procedure (above threshold)
- Tender Suitability
- Not specified
- Awardee Scale
- Large
Common Procurement Vocabulary (CPV)
- CPV Divisions
22 - Printed matter and related products
42 - Industrial machinery
43 - Machinery for mining, quarrying, construction equipment
44 - Construction structures and materials; auxiliary products to construction (except electric apparatus)
45 - Construction work
71 - Architectural, construction, engineering and inspection services
79 - Business services: law, marketing, consulting, recruitment, printing and security
98 - Other community, social and personal services
-
- CPV Codes
22314000 - Designs
42000000 - Industrial machinery
43320000 - Construction equipment
44421722 - Safety cases
45000000 - Construction work
45100000 - Site preparation work
45111000 - Demolition, site preparation and clearance work
45111200 - Site preparation and clearance work
45111213 - Site-clearance work
45210000 - Building construction work
45220000 - Engineering works and construction works
45222110 - Waste disposal site construction work
45315100 - Electrical engineering installation works
45351000 - Mechanical engineering installation works
71320000 - Engineering design services
71321000 - Engineering design services for mechanical and electrical installations for buildings
71322000 - Engineering design services for the construction of civil engineering works
71530000 - Construction consultancy services
79400000 - Business and management consultancy and related services
79410000 - Business and management consultancy services
79415200 - Design consultancy services
79723000 - Waste analysis services
79933000 - Design support services
98391000 - Decommissioning services
Notice Value(s)
- Tender Value
- £4,600,000,000 £1B-£10B
- Lots Value
- Not specified
- Awards Value
- £4,600,000,000 £1B-£10B
- Contracts Value
- Not specified
Notice Dates
- Publication Date
- 10 Nov 20253 months ago
- Submission Deadline
- 27 Jun 2024Expired
- Future Notice Date
- Not specified
- Award Date
- 30 Oct 20253 months ago
- Contract Period
- 30 Oct 2025 - 30 Oct 2040 Over 5 years
- Recurrence
- Not specified
Notice Status
- Tender Status
- Complete
- Lots Status
- Not Specified
- Awards Status
- Active
- Contracts Status
- Not Specified
Buyer & Supplier
Contracting Authority (Buyer)
- Main Buyer
- SELLAFIELD LIMITED
- Contact Name
- Michelle Edmondson
- Contact Email
- michelle.a.edmondson@sellafieldsites.com
- Contact Phone
- Not specified
Buyer Location
- Locality
- SEASCALE
- Postcode
- CA20 1PG
- Post Town
- Carlisle
- Country
- England
-
- Major Region (ITL 1)
- TLD North West (England)
- Basic Region (ITL 2)
- TLD1 Cumbria
- Small Region (ITL 3)
- TLD13 Cumberland
- Delivery Location
- Not specified
-
- Local Authority
- Cumberland
- Electoral Ward
- Gosforth
- Westminster Constituency
- Whitehaven and Workington
Further Information
Notice Documents
-
https://www.contractsfinder.service.gov.uk/Notice/6d4229ba-fc62-49f3-a066-5a41982c23bf
10th November 2025 - Awarded contract notice on Contracts Finder
Open Contracting Data Standard (OCDS)
View full OCDS Record for this contracting process
The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts.
{
"tag": [
"compiled"
],
"id": "ocds-b5fd17-a4d8dd6b-a51d-430d-89f1-8a04c1fac9fb-2025-11-10T09:02:35Z",
"date": "2025-11-10T09:02:35Z",
"ocid": "ocds-b5fd17-a4d8dd6b-a51d-430d-89f1-8a04c1fac9fb",
"language": "en",
"initiationType": "tender",
"tender": {
"id": "CF-0261000D4L000000iAvzUAE",
"title": "Decommissioning Nuclear Waste Partnership",
"description": "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: Lot 1 Remediation Partners Lot 2 Pond Retrievals Partner Lot 3 Silos Retrievals Partner Lot 4 Integrated Nuclear Waste Partner Lot 1 will consist of two Remediation Partners. 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. 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. 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. 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. 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.",
"status": "complete",
"classification": {
"scheme": "CPV",
"id": "45220000",
"description": "Engineering works and construction works"
},
"additionalClassifications": [
{
"scheme": "CPV",
"id": "71530000",
"description": "Construction consultancy services"
},
{
"scheme": "CPV",
"id": "71321000",
"description": "Engineering design services for mechanical and electrical installations for buildings"
},
{
"scheme": "CPV",
"id": "79400000",
"description": "Business and management consultancy and related services"
},
{
"scheme": "CPV",
"id": "45000000",
"description": "Construction work"
},
{
"scheme": "CPV",
"id": "79410000",
"description": "Business and management consultancy services"
},
{
"scheme": "CPV",
"id": "42000000",
"description": "Industrial machinery"
},
{
"scheme": "CPV",
"id": "45315100",
"description": "Electrical engineering installation works"
},
{
"scheme": "CPV",
"id": "71322000",
"description": "Engineering design services for the construction of civil engineering works"
},
{
"scheme": "CPV",
"id": "71320000",
"description": "Engineering design services"
},
{
"scheme": "CPV",
"id": "45210000",
"description": "Building construction work"
},
{
"scheme": "CPV",
"id": "98391000",
"description": "Decommissioning services"
},
{
"scheme": "CPV",
"id": "45100000",
"description": "Site preparation work"
},
{
"scheme": "CPV",
"id": "79723000",
"description": "Waste analysis services"
},
{
"scheme": "CPV",
"id": "45111200",
"description": "Site preparation and clearance work"
},
{
"scheme": "CPV",
"id": "79415200",
"description": "Design consultancy services"
},
{
"scheme": "CPV",
"id": "44421722",
"description": "Safety cases"
},
{
"scheme": "CPV",
"id": "45111000",
"description": "Demolition, site preparation and clearance work"
},
{
"scheme": "CPV",
"id": "45111213",
"description": "Site-clearance work"
},
{
"scheme": "CPV",
"id": "45000000",
"description": "Construction work"
},
{
"scheme": "CPV",
"id": "45351000",
"description": "Mechanical engineering installation works"
},
{
"scheme": "CPV",
"id": "43320000",
"description": "Construction equipment"
},
{
"scheme": "CPV",
"id": "22314000",
"description": "Designs"
},
{
"scheme": "CPV",
"id": "79933000",
"description": "Design support services"
},
{
"scheme": "CPV",
"id": "45222110",
"description": "Waste disposal site construction work"
}
],
"items": [
{
"id": "1",
"deliveryAddresses": [
{
"postalCode": "CA20 1PG"
},
{
"countryName": "British Oversea Territories"
},
{
"countryName": "Channel Islands"
},
{
"countryName": "Europe"
},
{
"countryName": "Isle of Man"
},
{
"countryName": "Rest of the World"
},
{
"countryName": "United Kingdom"
}
]
}
],
"value": {
"amount": 4600000000,
"currency": "GBP"
},
"procurementMethod": "selective",
"procurementMethodDetails": "Restricted procedure (above threshold)",
"tenderPeriod": {
"endDate": "2024-06-27T16:00:00+01:00"
},
"contractPeriod": {
"startDate": "2025-10-30T00:00:00Z",
"endDate": "2040-10-30T23:59:59Z"
},
"suitability": {
"sme": false,
"vcse": false
},
"mainProcurementCategory": "works"
},
"parties": [
{
"id": "GB-CFS-279061",
"name": "Sellafield Limited",
"identifier": {
"legalName": "Sellafield Limited"
},
"address": {
"streetAddress": "Sellafield",
"locality": "Seascale",
"postalCode": "CA20 1PG",
"countryName": "GB"
},
"contactPoint": {
"name": "Michelle Edmondson",
"email": "michelle.a.edmondson@sellafieldsites.com"
},
"roles": [
"buyer"
]
},
{
"id": "GB-CFS-327279",
"name": "TDA (AtkinsRealis UK, Amentum Clean Energy, Westinghouse El",
"identifier": {
"legalName": "TDA (AtkinsRealis UK, Amentum Clean Energy, Westinghouse El"
},
"address": {
"streetAddress": "Rutherford House, Westlakes Science Park, Moor Row, CA24 3HY"
},
"details": {
"scale": "large"
},
"roles": [
"supplier"
]
},
{
"id": "GB-CFS-327280",
"name": "Amentum Clean Energy Limited",
"identifier": {
"legalName": "Amentum Clean Energy Limited"
},
"address": {
"streetAddress": "305 Bridgewater Place Birchwood Park, Birchwood, Warrington, WA36XF"
},
"details": {
"scale": "large"
},
"roles": [
"supplier"
]
},
{
"id": "GB-CFS-327281",
"name": "NDS (Altrad Support Services Ltd, Cavendish Nuclear Ltd, Shepley",
"identifier": {
"legalName": "NDS (Altrad Support Services Ltd, Cavendish Nuclear Ltd, Shepley"
},
"address": {
"streetAddress": "Units 6 & 7 Lyncastle Way Appleton Thorne Trading Estate Warrington, Warrington, WA4 4ST"
},
"details": {
"scale": "large"
},
"roles": [
"supplier"
]
},
{
"id": "GB-CFS-327282",
"name": "A2R (Altrad Support Services Limited and AtkinsRealis UK Li",
"identifier": {
"legalName": "A2R (Altrad Support Services Limited and AtkinsRealis UK Li"
},
"address": {
"streetAddress": "Rutherford House, Westlakes Science Park, Whitehaven, CA24 3JZ"
},
"details": {
"scale": "large"
},
"roles": [
"supplier"
]
}
],
"buyer": {
"id": "GB-CFS-279061",
"name": "Sellafield Limited"
},
"awards": [
{
"id": "ocds-b5fd17-a4d8dd6b-a51d-430d-89f1-8a04c1fac9fb-1",
"status": "active",
"date": "2025-10-30T00:00:00Z",
"datePublished": "2025-11-10T09:02:34Z",
"value": {
"amount": 4600000000,
"currency": "GBP"
},
"suppliers": [
{
"id": "GB-CFS-327279",
"name": "TDA (AtkinsRealis UK, Amentum Clean Energy, Westinghouse El"
},
{
"id": "GB-CFS-327280",
"name": "Amentum Clean Energy Limited"
},
{
"id": "GB-CFS-327281",
"name": "NDS (Altrad Support Services Ltd, Cavendish Nuclear Ltd, Shepley"
},
{
"id": "GB-CFS-327282",
"name": "A2R (Altrad Support Services Limited and AtkinsRealis UK Li"
}
],
"contractPeriod": {
"startDate": "2025-10-30T00:00:00Z",
"endDate": "2040-10-30T23:59:59Z"
},
"documents": [
{
"id": "1",
"documentType": "awardNotice",
"description": "Awarded contract notice on Contracts Finder",
"url": "https://www.contractsfinder.service.gov.uk/Notice/6d4229ba-fc62-49f3-a066-5a41982c23bf",
"datePublished": "2025-11-10T09:02:34Z",
"format": "text/html",
"language": "en"
}
]
}
]
}