Scope
Description
Great British Nuclear) is aiming to procure up to two OEs as part of its Small Modular Reactor (SMR) programme.
The OE will provide essential independent assurance to the Intelligent Customer and Intelligent Client for the relevant SMR project. This will support the deployment of first-of-a-kind nuclear technology in the UK and facilitate GBN's goal of reaching a Final Investment Decision(s) for up to two SMR projects. 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.
Each tenderer will be expected to be able to evidence how it will provide all of the capabilities outlined in the Technical ability section of the questions relating to the conditions of participation.
The total contract value of £600m stated in this notice assumes that GBN will award two OE contracts (one for each planned SMR project), each with a total contract value of up to £300m. The actual value will depend on a number of factors. GBN reserves the right not to proceed with two SMR projects.
The duration of the OE contract(s) is not yet confirmed. This notice envisages a 14-year term, but please note that GBN will set a completion date once the outcome of the SMR Technology Partner procurement is known.
Total value (estimated)
- £600,000,000 excluding VAT
- £720,000,000 including VAT
Contract dates (estimated)
- 26 March 2026 to 26 March 2040
- 14 years, 1 day
Main category
Services
CPV classifications
- 71300000 - Engineering services
- 71500000 - Construction-related services
- 71600000 - Technical testing, analysis and consultancy services
- 79417000 - Safety consultancy services
Contract locations
- UK - United Kingdom
Participation
Particular suitability
Small and medium-sized enterprises (SME)
Submission
Publication date of tender notice (estimated)
2 June 2025
Procedure
Procedure type
Competitive flexible procedure
Above or below total value threshold
Above or equal to threshold
Contracting authority
GREAT BRITISH NUCLEAR
- Companies House: 05027024
- Public Procurement Organisation Number: PRCJ-2655-YDML
Department For Energy Security & Net Zero
London
SW1A 2EG
United Kingdom
Region: UKI32 - Westminster
Organisation type: Public authority - central government