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Owner's Engineer

GREAT BRITISH ENERGY - NUCLEAR Published 29 Jun 2026 Find a Tender

key details

Value£600,000,000 (£720,000,000 inc. VAT)
Statuscomplete
Category (CPV) 71300000 +3 more
Deadline9 Jul 2025
Procedureselective
SME suitableYes
OCIDocds-h6vhtk-0505a0

Awards (4)

This procurement was awarded to 2 suppliers. Values shown are per-award; the notice total is £600,000,000.

SupplierValueDateStatus
AMENTUM CLEAN ENERGY LIMITED shared £300,000,000 9 Feb 2026 active
AMENTUM CLEAN ENERGY LIMITED shared · · active
CAVENDISH NUCLEAR LIMITED shared £300,000,000 9 Feb 2026 active
CAVENDISH NUCLEAR LIMITED shared · · active

description

The OE will provide essential independent assurance to the Intelligent Customer and Intelligent Client for the Small Modular Reactor project. This will support the deployment of first-of-a-kind nuclear technology in the UK and facilitate GBE-N's goal of reaching a Final Investment Decision. In particular, the OE will act as a 'client friend' to the Intelligent Customer and Intelligent Client and provide competent resource to undertake specification, oversight, audit, review and advice for decisions relating to design, scope, budget, risk, delivery and contract compliance. It will also play the role of subject matter expert to deliver independent technical and delivery Line of Defence 2 assurance on major design and build contracts.

The maximum total contract value is £300m. However, it is not possible to predict an exact outturn value at this stage due to the length of the contract and inherent uncertainties in scope, which drive variability in the volume of work instructed. In addition, progression through design stages and associated milestones or gates will determine the timing and extent of services required, potentially influencing the overall contract value over time.

As envisaged in the tender notice, the duration of the OE contract will depend on matters agreed with the SMR Technology Partner. The current assumption remains that the OE contract will have a 14-year term, but a completion date will be set during the term of the contract in accordance with its terms and to reflect the term of the SMR Technology Partner contract.

documents

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notice history

12 notices published against this procurement.

PublishedTypeRegimeNotice
22 Apr 2025 Preliminary market engagement (UK2) Procurement Act 2023 016232-2025
22 Apr 2025 Planned procurement (UK3) Procurement Act 2023 016291-2025
28 Apr 2025 Planned procurement (UK3) Procurement Act 2023 017244-2025
30 Apr 2025 Planned procurement (UK3) Procurement Act 2023 017813-2025
12 May 2025 Pipeline notice (UK1) Procurement Act 2023 020508-2025
3 Jun 2025 Tender notice (UK4) Procurement Act 2023 029471-2025
4 Jun 2025 Tender notice (UK4) Procurement Act 2023 030038-2025
17 Jun 2025 Tender notice (UK4) Procurement Act 2023 032797-2025
2 Jul 2025 Tender notice (UK4) Procurement Act 2023 036644-2025
9 Feb 2026 Contract award (UK6) Procurement Act 2023 011436-2026
30 Apr 2026 Contract details (UK7) Procurement Act 2023 039929-2026
29 Jun 2026 Contract details (UK7) Procurement Act 2023 060937-2026

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source

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