Section one: Contracting authority
one.1) Name and addresses
Sellafield Limited
Hinton House, Birchwood Park Avenue
Warrington
WA3 6GR
Contact
Emma Miller
emma.miller@sellafieldsites.com
Country
United Kingdom
Region code
UKD1 - Cumbria
National registration number
01002607
Internet address(es)
Main address
https://www.gov.uk/government/organisations/sellafield-ltd
Buyer's address
https://www.gov.uk/government/organisations/sellafield-ltd
one.4) Type of the contracting authority
Body governed by public law
one.5) Main activity
Other activity
Nuclear Decommissioning
Section two: Object
two.1) Scope of the procurement
two.1.1) Title
Infrastructure Delivery Partnership (IDP)
Reference number
2025-910592
two.1.2) Main CPV code
- 45000000 - Construction work
two.1.3) Type of contract
Works
two.1.4) Short description
IDP will deliver conventional infrastructure projects and tasks. There are 3 Lots:
Electrical Distribution Delivery Partner, Utilities Delivery Partner and Civils Delivery Partner.
Delivery Partners will take the single viable option and complete detailed design and all procurement, installation, construction, commissioning and handover activities that form part of delivery.
The value stated at II.1.7.1 is the upper value range. The value is for the maximum contract term of 180 months, this term consists of an initial term of 108 months.
two.1.6) Information about lots
This contract is divided into lots: Yes
two.1.7) Total value of the procurement (excluding VAT)
Value excluding VAT: £2,945,000,000
two.2) Description
two.2.1) Title
Lot 1 Strategic Partner
Lot No
1
two.2.2) Additional CPV code(s)
- 71300000 - Engineering services
- 79421000 - Project-management services other than for construction work
- 45200000 - Works for complete or part construction and civil engineering work
- 71322100 - Quantity surveying services for civil engineering works
- 71340000 - Integrated engineering services
- 72224000 - Project management consultancy services
- 51100000 - Installation services of electrical and mechanical equipment
- 71242000 - Project and design preparation, estimation of costs
- 45100000 - Site preparation work
- 71541000 - Construction project management services
- 71300000 - Engineering services
- 71322000 - Engineering design services for the construction of civil engineering works
- 71350000 - Engineering-related scientific and technical services
- 71324000 - Quantity surveying services
- 71245000 - Approval plans, working drawings and specifications
- 71240000 - Architectural, engineering and planning services
- 79994000 - Contract administration services
- 71310000 - Consultative engineering and construction services
- 79410000 - Business and management consultancy services
- 71323000 - Engineering-design services for industrial process and production
- 71000000 - Architectural, construction, engineering and inspection services
- 45222100 - Waste-treatment plant construction work
- 71320000 - Engineering design services
- 71330000 - Miscellaneous engineering services
- 66140000 - Portfolio management services
- 71311000 - Civil engineering consultancy services
- 71540000 - Construction management services
- 71321000 - Engineering design services for mechanical and electrical installations for buildings
two.2.3) Place of performance
NUTS codes
- UKD11 - West Cumbria
Main site or place of performance
West Cumbria
two.2.4) Description of the procurement
The scope of the Strategic Partner was:
• Provision of strategic front-end definition
• Portfolio management of programmes, projects and tasks to maximise benefit
• Infrastructure planning (land, utilities, transport, accommodation) to inform and support the Sellafield Ltd Masterplan
• To undertake feasibility studies and initial engineering design, this will require Delivery Partner and Sellafield Ltd subject matter expert input
• To undertake benchmarking and should-cost modelling on costs and schedules
• Production of business cases.
• Provision of input into commissioning strategies and embedding capabilities into business as usual
• To support portfolio planning and optimisation
• To undertake stakeholder engagement
• Sustainability - energy modelling, carbon analysis
• Data management controls, security, governance, retrievals and business continuity
• Drive innovation through the Portfolio
• Knowledge transfer – facilitation, LFE capture, dissemination, obtaining and complying with ISO44001 in the IDP environment
• Gathering, documenting and sharing pre-construction information
Sellafield Ltd made the decision to cancel the Lot 1 procurement in accordance with Sellafield Ltd.'s right to cancel a lot and not to award a contract as provided for at Section 11.9 of the Selection Questionnaire Instructions and also Section 6.6 of the Invitation to Submit Final Tender Instructions.
two.2.5) Award criteria
Quality criterion - Name: Technical / Weighting: 70%
Cost criterion - Name: Commercial / Weighting: 30%
two.2.11) Information about options
Options: No
two.2.13) Information about European Union Funds
The procurement is related to a project and/or programme financed by European Union funds: No
two.2) Description
two.2.1) Title
Lot 2 Electrical Distribution Delivery Partner
Lot No
2
two.2.2) Additional CPV code(s)
- 45000000 - Construction work
- 71244000 - Calculation of costs, monitoring of costs
- 45300000 - Building installation work
- 45400000 - Building completion work
- 50000000 - Repair and maintenance services
- 71000000 - Architectural, construction, engineering and inspection services
- 71541000 - Construction project management services
- 45200000 - Works for complete or part construction and civil engineering work
- 71320000 - Engineering design services
- 45222100 - Waste-treatment plant construction work
- 79421000 - Project-management services other than for construction work
- 71350000 - Engineering-related scientific and technical services
- 71321000 - Engineering design services for mechanical and electrical installations for buildings
- 71323000 - Engineering-design services for industrial process and production
- 71245000 - Approval plans, working drawings and specifications
- 71300000 - Engineering services
- 45222110 - Waste disposal site construction work
- 71240000 - Architectural, engineering and planning services
- 79994000 - Contract administration services
- 71324000 - Quantity surveying services
- 79410000 - Business and management consultancy services
- 50710000 - Repair and maintenance services of electrical and mechanical building installations
- 45100000 - Site preparation work
- 71311100 - Civil engineering support services
- 71322000 - Engineering design services for the construction of civil engineering works
- 71540000 - Construction management services
- 50700000 - Repair and maintenance services of building installations
- 51100000 - Installation services of electrical and mechanical equipment
- 71243000 - Draft plans (systems and integration)
- 71311000 - Civil engineering consultancy services
- 45000000 - Construction work
- 71242000 - Project and design preparation, estimation of costs
- 71322100 - Quantity surveying services for civil engineering works
- 45213250 - Construction work for industrial buildings
- 66140000 - Portfolio management services
- 71310000 - Consultative engineering and construction services
- 71330000 - Miscellaneous engineering services
- 71340000 - Integrated engineering services
- 72224000 - Project management consultancy services
two.2.3) Place of performance
NUTS codes
- UKD11 - West Cumbria
Main site or place of performance
West Cumbria
two.2.4) Description of the procurement
The Scope of the Electrical Distribution Delivery Partner includes the completion of detailed design and all procurement, installation, construction, commissioning and handover activities that form part of delivery. Typical Electrical Distribution Partner scope will include:
• Refurbishment or replacement of Distribution System Transformers
• Refurbishment or replacement of Electrical substations
• Refurbishment or replacement of Electrical Switchgear
• Replacement of distribution cabling and cable support structures
• Upgrade of site distribution Tele-control system
• Installation of additional standby generation capacity
• Upgrade or refurbishment of existing standby generating capacity
• Upgrade or refurbishment of existing generating capacity
• Installation of additional connection points to the National Grid
• Refurbishment of existing grid connections
• Major repair work to any of the above
• A programme of planned job and tasks
The value stated at V.2.4.2 is the upper value range of the Lot. The value is for the maximum contract term of 180 months, this term consists of an initial term of 108 months.
two.2.5) Award criteria
Quality criterion - Name: Technical / Weighting: 70%
Cost criterion - Name: Commercial / Weighting: 30%
two.2.11) Information about options
Options: No
two.2.13) Information about European Union Funds
The procurement is related to a project and/or programme financed by European Union funds: No
two.2) Description
two.2.1) Title
Lot 3 Utilities Delivery Partner
Lot No
3
two.2.2) Additional CPV code(s)
- 45000000 - Construction work
- 45300000 - Building installation work
- 50700000 - Repair and maintenance services of building installations
- 71240000 - Architectural, engineering and planning services
- 71000000 - Architectural, construction, engineering and inspection services
- 71541000 - Construction project management services
- 79994000 - Contract administration services
- 45400000 - Building completion work
- 71311000 - Civil engineering consultancy services
- 45100000 - Site preparation work
- 71322100 - Quantity surveying services for civil engineering works
- 71311100 - Civil engineering support services
- 71540000 - Construction management services
- 71311000 - Civil engineering consultancy services
- 50000000 - Repair and maintenance services
- 71324000 - Quantity surveying services
- 71340000 - Integrated engineering services
- 66140000 - Portfolio management services
- 71245000 - Approval plans, working drawings and specifications
- 71350000 - Engineering-related scientific and technical services
- 45222100 - Waste-treatment plant construction work
- 71300000 - Engineering services
- 45200000 - Works for complete or part construction and civil engineering work
- 71243000 - Draft plans (systems and integration)
- 71323000 - Engineering-design services for industrial process and production
- 79421000 - Project-management services other than for construction work
- 71244000 - Calculation of costs, monitoring of costs
- 51100000 - Installation services of electrical and mechanical equipment
- 72224000 - Project management consultancy services
- 45213250 - Construction work for industrial buildings
- 71321000 - Engineering design services for mechanical and electrical installations for buildings
- 71322000 - Engineering design services for the construction of civil engineering works
- 71320000 - Engineering design services
- 71310000 - Consultative engineering and construction services
- 45222110 - Waste disposal site construction work
- 50710000 - Repair and maintenance services of electrical and mechanical building installations
- 71242000 - Project and design preparation, estimation of costs
- 71330000 - Miscellaneous engineering services
- 79410000 - Business and management consultancy services
two.2.3) Place of performance
NUTS codes
- UKD11 - West Cumbria
Main site or place of performance
West Cumbria
two.2.4) Description of the procurement
The Scope of the Utilities Delivery Partner includes the completion of detailed design and all procurement, installation, construction, commissioning and handover activities that form part of delivery. Typical Utilities Partner scope will include:
• Refurbishment or replacement of the on-site steam distribution system and support structures
• Refurbishment or replacement of the on-site water distribution system and support structures.
• Refurbishment or replacement of the off-site water supply and distribution system including the domestic water treatment plant and storage reservoirs
• Refurbishment of the demineralised water treatment and conditioning plant
• Refurbishment or replacement of the on-site compressed air generation and distribution system including support structures
• Refurbishment or replacement of the on-site bulk chemical storage tanks and associated equipment
• Refurbishment or replacement of the on-site chemical distribution system and support structures
• Improvements to rail and road tanker off-load facility
• Refurbishment or replacement of the sewage treatment plant
• A programme of planned job and tasks
The value stated at V.2.4.2 is the upper value range of the Lot. The value is for the maximum contract term of 180 months, this term consists of an initial term of 108 months.
two.2.5) Award criteria
Quality criterion - Name: Technical / Weighting: 70%
Cost criterion - Name: Commercial / Weighting: 30%
two.2.11) Information about options
Options: No
two.2.13) Information about European Union Funds
The procurement is related to a project and/or programme financed by European Union funds: No
two.2) Description
two.2.1) Title
Lot 4 Civils Delivery Partner
Lot No
4
two.2.2) Additional CPV code(s)
- 45000000 - Construction work
- 71243000 - Draft plans (systems and integration)
- 71000000 - Architectural, construction, engineering and inspection services
- 71322000 - Engineering design services for the construction of civil engineering works
- 71240000 - Architectural, engineering and planning services
- 71320000 - Engineering design services
- 71323000 - Engineering-design services for industrial process and production
- 71330000 - Miscellaneous engineering services
- 45400000 - Building completion work
- 45100000 - Site preparation work
- 45222110 - Waste disposal site construction work
- 72224000 - Project management consultancy services
- 71311100 - Civil engineering support services
- 71324000 - Quantity surveying services
- 51100000 - Installation services of electrical and mechanical equipment
- 71321000 - Engineering design services for mechanical and electrical installations for buildings
- 45222100 - Waste-treatment plant construction work
- 71311000 - Civil engineering consultancy services
- 50000000 - Repair and maintenance services
- 79410000 - Business and management consultancy services
- 71540000 - Construction management services
- 66140000 - Portfolio management services
- 45200000 - Works for complete or part construction and civil engineering work
- 50700000 - Repair and maintenance services of building installations
- 71310000 - Consultative engineering and construction services
- 71541000 - Construction project management services
- 71245000 - Approval plans, working drawings and specifications
- 50710000 - Repair and maintenance services of electrical and mechanical building installations
- 71340000 - Integrated engineering services
- 71324000 - Quantity surveying services
- 45300000 - Building installation work
- 79421000 - Project-management services other than for construction work
- 71322100 - Quantity surveying services for civil engineering works
- 79994000 - Contract administration services
- 71300000 - Engineering services
- 45213250 - Construction work for industrial buildings
- 71242000 - Project and design preparation, estimation of costs
- 71244000 - Calculation of costs, monitoring of costs
- 71350000 - Engineering-related scientific and technical services
two.2.3) Place of performance
NUTS codes
- UKD11 - West Cumbria
Main site or place of performance
West Cumbria
two.2.4) Description of the procurement
The Scope of the Civils Delivery Partner includes the completion of detailed design and all procurement, installation, construction, commissioning and handover activities that form part of delivery. Typical Civils Partner scope will include:
• General civils design and engineering
• Road Network including all earthworks slopes and retaining structures
• Rail Network including all earthworks slopes and retaining structures
• Highway, Rail and Pedestrian Bridges
• Service Bridges (pipes, cables and the like)
• Service Trenches
• Service Supports
• Below ground ducts including street works
• Foundations to equipment (electrical equipment, lighting and the like)
• Above ground service supports
• Hard standings for vehicles and mobile plant including car parks
• Hard and soft landscaping
• Retaining walls
• Security Fences, Turnstiles and Gates
• Other minor civils/structural work including utility supports
The value stated at V.2.4.2 is the upper value range of the Lot. The value is for the maximum contract term of 180 months, this term consists of an initial term of 108 months.
two.2.5) Award criteria
Quality criterion - Name: Technical / Weighting: 70%
Cost criterion - Name: Commercial / Weighting: 30%
two.2.11) Information about options
Options: No
two.2.13) Information about European Union Funds
The procurement is related to a project and/or programme financed by European Union funds: No
Section four. Procedure
four.1) Description
four.1.1) Type of procedure
Competitive procedure with negotiation
four.1.8) Information about the Government Procurement Agreement (GPA)
The procurement is covered by the Government Procurement Agreement: Yes
four.2) Administrative information
four.2.1) Previous publication concerning this procedure
Notice number: 2023/S 000-004254
Section five. Award of contract
A contract/lot is awarded: Yes
five.2) Award of contract
five.2.1) Date of conclusion of the contract
10 October 2025
five.2.2) Information about tenders
Number of tenders received: 4
Number of tenders received from SMEs: 0
Number of tenders received from tenderers from other EU Member States: 0
Number of tenders received from tenderers from non-EU Member States: 4
Number of tenders received by electronic means: 4
The contract has been awarded to a group of economic operators: No
five.2.3) Name and address of the contractor
Morgan Sindall Construction and Infrastructure Ltd
Kent House, 14-17 Market Place
London
W1W 8AJ
Country
United Kingdom
NUTS code
- UKI - London
National registration number
4273754
Internet address
www.morgansindallinfrastructure.com
The contractor is an SME
No
five.2.4) Information on value of contract/lot (excluding VAT)
Initial estimated total value of the contract/lot: £1,290,000,000
Total value of the contract/lot: £1,290,000,000
Section five. Award of contract
A contract/lot is awarded: Yes
five.2) Award of contract
five.2.1) Date of conclusion of the contract
10 October 2025
five.2.2) Information about tenders
Number of tenders received: 2
Number of tenders received from SMEs: 0
Number of tenders received from tenderers from other EU Member States: 0
Number of tenders received from tenderers from non-EU Member States: 2
Number of tenders received by electronic means: 2
The contract has been awarded to a group of economic operators: No
five.2.3) Name and address of the contractor
Costain Limited
Costain House, Vanwall Business Park
Maidenhead
SL6 4UB
Country
United Kingdom
NUTS code
- UKJ1 - Berkshire, Buckinghamshire and Oxfordshire
National registration number
610201
Internet address
The contractor is an SME
No
five.2.4) Information on value of contract/lot (excluding VAT)
Initial estimated total value of the contract/lot: £1,060,000,000
Total value of the contract/lot: £1,060,000,000
Section five. Award of contract
A contract/lot is awarded: Yes
five.2) Award of contract
five.2.1) Date of conclusion of the contract
10 October 2025
five.2.2) Information about tenders
Number of tenders received: 4
Number of tenders received from SMEs: 0
Number of tenders received from tenderers from other EU Member States: 0
Number of tenders received from tenderers from non-EU Member States: 4
Number of tenders received by electronic means: 4
The contract has been awarded to a group of economic operators: No
five.2.3) Name and address of the contractor
HOCHTIEF UK
Windmill Hill Business Park
Swindon
SN5 6PE
Country
United Kingdom
NUTS code
- UKK1 - Gloucestershire, Wiltshire and Bristol/Bath area
National registration number
1002607
Internet address
The contractor is an SME
No
five.2.4) Information on value of contract/lot (excluding VAT)
Initial estimated total value of the contract/lot: £595,000,000
Total value of the contract/lot: £595,000,000
Section five. Award of contract
A contract/lot is awarded: No
five.1) Information on non-award
The contract/lot is not awarded
Other reasons (discontinuation of procedure)
Section six. Complementary information
six.3) Additional information
Note: When the procurement commenced there were originally 4 Lots, however, during the course of the procurement Lot 1 Strategic Partner was cancelled. Further detail at Lot 1 Strategic Partner II.2.4.
six.4) Procedures for review
six.4.1) Review body
Royal Courts Of Justice
Strand
London
WC2A 2LL
Country
United Kingdom
Internet address
https://www.find-court-tribunal.service.gov.uk/courts/royal-courts-of-justice
six.4.2) Body responsible for mediation procedures
Royal Courts Of Justice
Strand
London
WC2A 2LL
Country
United Kingdom
Internet address
https://www.find-court-tribunal.service.gov.uk/courts/royal-courts-of-justice
six.4.4) Service from which information about the review procedure may be obtained
Royal Courts Of Justice
Strand
London
WC2A 2LL
Country
United Kingdom
Internet address
https://www.find-court-tribunal.service.gov.uk/courts/royal-courts-of-justice