Loading contract…
BETAThis is a new independent transparency project, not an official government website. The data is sourced from public registers and may contain errors, so always verify against the official source. If you find a problem, please report it here.
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.
Framework contract: £300,000,000 total value shared among 2 suppliers. Estimated equal shares shown below.
| Supplier | Identifier | Est. Share | Lots Won | Cross-References |
|---|---|---|---|---|
| AMENTUM CLEAN ENERGY LIMITED | 01120437 | ~£150,000,000 | 1 lot Lot 1 | - |
| CAVENDISH NUCLEAR LIMITED | 03975999 | ~£150,000,000 | 1 lot Lot 1 | - |
Taken from this notice, not from Companies House. Check the original notice — details change and are not updated here.
This procurement was divided into 1 lots, each awarded separately. 6 bids were received in total.
| Lot | Value | Bids Received | Awarded To | Status |
|---|---|---|---|---|
| Lot 1 Mar 2026 – Mar 2040 | £600,000,000 | 6 | active |
Notices published under the Procurement Act 2023 name every bidder, including unsuccessful ones.
| Bidder | Bid on | Outcome |
|---|---|---|
| AMENTUM CLEAN ENERGY LIMITED | Lot 1 | Won |
| AFRY SOLUTIONS UK LIMITED | Lot 1 | Unsuccessful |
| LLOYD'S REGISTER EMEA | Lot 1 | Unsuccessful |
| MOTT MACDONALD LIMITED | Lot 1 | Unsuccessful |
| OVE ARUP & PARTNERS LIMITED | Lot 1 | Unsuccessful |
| TRACTEBEL ENGINEERING (FRANCE) | Lot 1 | Unsuccessful |
Weightings from the notice.
Government spending data: These suppliers have received £21,153,108 in 183 payments (over £25k) from Ministry of Defence, BEIS, DESNZ, Home Office, UKRI and 10 more public bodies (2015-05-12 to 2026-03-24).
Changes the buyer published to this notice after it first appeared.
Added Operations as a technical capability in the conditions of participation.
Attaching the early market engagement pack shared with selected suppliers to the notice.
Updated Draft contract. The previous contract attached to this notice included an outdated interim statement of requirements which has now been updated in Schedule 4 to reflect the current interim statement of requirements previously uploaded to this notice.
Updating documentation in line with that provided on Jaggaer eprocurement system.
Dear Suppliers,
Please see in the attachments section version 2 of the PSQ Instructions and Form documents amended, which contain the following updates:
· The GBE-N name change
· Only one OE Contract is intended to be awarded
· Only one TP Contract has been awarded
· Minor amendments to the conflicts of interest definition
· Minor amendment to the prompt payment question in the PSQ form
· Some minor typographical amendments
· Clarity over which questions Lead Applicants of Consortia are expected to produce composite responses, versus which questions require a submission from all Consortium members - Financial Standing, Prompt Payment and Carbon Reduction.
Please also see the draft volume 6 - Glossary, noting it is presently incomplete and is subject to change at ITT stage.