AwardedAwarded 31 March 2026
Owner's Engineer
Great British Energy - Nuclear · Central government
In brief
Great British Energy - Nuclear awarded architecture and engineering and consultancy work to Altrad Babcock Limited and Cavendish Nuclear Limited on 31 March 2026.
Built from the notice's own fields. Always check the official notice before you bid.
What the notice says
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…Read the full 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.
Who won
| Winner | Value | Dates |
|---|---|---|
| Altrad Babcock Limited Cavendish Nuclear Limited 6 bids received | £300,000,000 | 31 March 2026 to 24 April 2040 |
| Altrad Babcock Limited Cavendish Nuclear Limited 6 bids received | £300,000,000 | Awarded 9 February 2026 23 April 2026 to 24 April 2040 |
Values as the award notice gives them, excluding VAT where stated.
Timeline
- Contract award notice · UK6, notice 011436-2026
- Contract details notice · UK7, notice 039929-2026
- Contract details notice · UK7, notice 060937-2026
- Contract change notice · UK10, notice 075438-2026
About the buyer
Great British Energy - NuclearLast 12 months
Procurements
29Awards
19Suppliers it has used most for architecture and engineering
- Altrad Babcock Limited1 contract
- Bam Nuttall Limited1 contract
- Cavendish Nuclear Limited1 contract
- Jacobs U.K. Limited1 contract
- Ove Arup & Partners Ltd1 contract
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From notice 011436-2026 on Find a Tender, first published 9 February 2026, last updated 7 August 2026. We last checked for changes on 28 September 2026.