Published date: 20 October 2025

Awarded contract - This means that the contract has been awarded to a supplier.


Closing: 5 February 2024, 11:59pm

Contract summary

Industry

  • Construction work - 45000000

  • Site preparation work - 45100000

  • Works for complete or part construction and civil engineering work - 45200000

    • Construction work for industrial buildings - 45213250

    • Waste-treatment plant construction work - 45222100

    • Waste disposal site construction work - 45222110

    • Building installation work - 45300000

    • Building completion work - 45400000

    • Repair and maintenance services of building installations - 50700000

    • Repair and maintenance services of electrical and mechanical building installations - 50710000

    • Installation services of electrical and mechanical equipment - 51100000

    • Portfolio management services - 66140000

    • Architectural, construction, engineering and inspection services - 71000000

    • Architectural, engineering and planning services - 71240000

    • Project and design preparation, estimation of costs - 71242000

    • Draft plans (systems and integration) - 71243000

    • Calculation of costs, monitoring of costs - 71244000

    • Approval plans, working drawings and specifications - 71245000

    • Engineering services - 71300000

    • Consultative engineering and construction services - 71310000

    • Civil engineering consultancy services - 71311000

    • Civil engineering support services - 71311100

    • Engineering design services - 71320000

    • Engineering design services for mechanical and electrical installations for buildings - 71321000

    • Engineering design services for the construction of civil engineering works - 71322000

    • Quantity surveying services for civil engineering works - 71322100

    • Engineering-design services for industrial process and production - 71323000

    • Quantity surveying services - 71324000

    • Miscellaneous engineering services - 71330000

    • Integrated engineering services - 71340000

    • Engineering-related scientific and technical services - 71350000

    • Construction management services - 71540000

    • Construction project management services - 71541000

    • Project management consultancy services - 72224000

    • Business and management consultancy services - 79410000

    • Project-management services other than for construction work - 79421000

    • Contract administration services - 79994000

Location of contract

CA20 1PG

Value of contract

£1,560,000,000 to £2,945,000,000

Procurement reference

CF-0257400D4L000000iAvzUAE

Published date

20 October 2025

Closing date

5 February 2024

Closing time

11:59pm

Contract start date

10 October 2025

Contract end date

10 October 2040

Contract type

Works

Procedure type

Competitive procedure with negotiation (above threshold)

Anyone may ask to participate, but only those who are pre-selected will be invited to submit initial tenders and to negotiate.

This procedure can be used for procurements above the relevant contract value threshold.

Contract is suitable for SMEs?

No

Contract is suitable for VCSEs?

No

Description

The Infrastructure Delivery Partnership 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.


Note: When the procurement commenced there were originally 4 Lots, however, during the course of the procurement Lot 1 Strategic Partner was cancelled. This was 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.

Award information

Awarded date

10 October 2025

Contract start date

10 October 2025

Contract end date

10 October 2040

Total value of contract

£2,945,000,000

This contract was awarded to 3 suppliers.

Morgan Sindall Construction & Infrastructure Ltd

Address

Kent House, 14-17 Market Place, London, W1W 8AJ

Reference

None

Supplier is SME?

No

Costain Limited

Address

Costain House, Vanwall Business Park, Maidenhead, SL6 4UB

Reference

None

Supplier is SME?

No

HOCHTIEF UK

Address

Windmill Hill Business Park, Swindon, SN5 6PE

Reference

None

Supplier is SME?

No

About the buyer

Contact name

Emma Miller

Address

Herdus House, Westlakes Science Park, Ingwell Drive
Whitehaven
CA24 3HU
GB

Email

emma.miller@sellafieldsites.com