Buyer Name: GREAT BRITISH NUCLEAR
Buyer Address: GBN Department For Energy Security and Net Zero, London, UKI32, SW1A 2EG, United Kingdom
Contact Email: commercialcdp@greatbritishnuclear.uk
Buyer Name: GREAT BRITISH NUCLEAR
Buyer Address: GBN Department For Energy Security and Net Zero, London, UKI32, SW1A 2EG, United Kingdom
Contact Email: commercialcdp@greatbritishnuclear.uk
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. All documentation can be found on Jaggaer. All communications regarding the procurement will be held via Jaggaer. All responses will be submitted via Jaggaer. https://beisgroup.ukp.app.jaggaer.com/
External Link: https://www.find-tender.service.gov.uk/Notice/036644-2025
Link Description: Tender notice on Find a Tender
Lot 1 Status: active
Lot 1 Value: GBP 600,000,000
Lot 1 Value (Gross): GBP 720,000,000
Lot 1 Contract Start: 2026-03-26T00:00:00Z
Lot 1 Contract End: 2040-03-27T23:59:59Z
Lot 1 SME Suitable: Yes
Lot 1 Award Criterion (quality): Technical Envelope (60%)
Lot 1 Award Criterion (quality): Social Value Envelope (10%)
Lot 1 Award Criterion (price): Commercial Envelope (30%)
Document Description: Not published
Document Description: Updated Draft Contract. The previous version of the contract included an outdated statement of requirements in Schedule 4. This draft contract now reflects the interim statement of requirements that was published alongside this notice.
Document Description: Tracked Changes version.
Document Description: Response templates.
Document Description: Tender notice on Find a Tender
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"description": "Great British Nuclear is aiming to procure up to two OEs as part of its Small Modular Reactor (SMR) programme.\nThe 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\u0027s goal of reaching a Final Investment Decision(s) for up to two SMR projects.\u202fIn particular, the OE will act as a \u0027client friend\u0027 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.\u202f 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.\u202f\nEach 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.\nThe total contract value of \u00a3600m 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 \u00a3300m. The actual value will depend on a number of factors. GBN reserves the right not to proceed with two SMR projects.\nThe 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.\nAll documentation can be found on Jaggaer. All communications regarding the procurement will be held via Jaggaer. All responses will be submitted via Jaggaer.\nhttps://beisgroup.ukp.app.jaggaer.com/",
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"description": "Please refer to the Procurement Specific Questionnaire for a set of Economic and Financial Standing requirements, and conflicts of interest requirements\nAll documentation can be found on Jaggaer. All communications regarding the procurement will be held via Jaggaer. All responses will be submitted via Jaggaer.",
"type": "economic"
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"description": "Please refer to the Procurement Specific Questionnaire for a set of technical and programme delivery skills and capabilities.\nAll documentation can be found on Jaggaer. All communications regarding the procurement will be held via Jaggaer. All responses will be submitted via Jaggaer.",
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"procedure": {
"features": "The Owner\u0027s Engineer (OE) will be procured using the Competitive Flexible Procedure outlined in the Procurement Act 2023 (the Act).\nThere will be two stages in the OE procurement. In the first stage, tenderers will need to respond to the Procurement Specific Questionnaire (PSQ), which will include conditions of participation. The PSQ will cover topics including, but not limited to, conflicts of interest, economic and financial standing and the tenderer\u0027s ability to provide the technical and programme capabilities listed later in this notice. The capabilities set out in the technical ability conditions of participation section below can be delivered in various ways, including (but not limited to) by a tenderer and its supply chain, a joint venture, a special purpose vehicle or a consortium. Please note that while GBN considers this list of capabilities to be comprehensive, it reserves the right to change them (and any other information provided in this notice) by the time of launching the OE procurement.\nIf the response submitted by a tenderer as part of the first stage of the procurement satisfies all the relevant conditions, the tenderer will be invited to submit a tender as part of the second stage of the procurement. GBN will then assess the tenderer\u0027s proposals against questions covering Technical, Commercial and Social Value criteria. Please note that GBN reserves the right to refine its award criteria during the procurement process.\nAll documentation can be found on Jaggaer. All communications regarding the procurement will be held via Jaggaer. All responses will be submitted via Jaggaer.\nhttps://beisgroup.ukp.app.jaggaer.com/"
},
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"status": "active",
"submissionMethodDetails": "https://beisgroup.ukp.app.jaggaer.com\nThe JAGGAER eSourcing Portal may be accessed at https://beisgroup.ukp.app.jaggaer.com/\nThis is where submissions will be made, all communications between GBN and Tenderers will occur, and is where all official PSQ documentation will be issued.\nFor further assistance with regards registering on the Jaggaer eSourcing Portal, please consult the available help.\nPhone: 08000 698 632\nEmail: customersupport@jaggaer.com",
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},
"tenderPeriod": {
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