Official UK procurement notice
Trawsfynydd Reactor Buildings Height Reduction
Authority: Nuclear Restoration Services Limited (Public body)·Consortium: 2 public authorities
What is being bought
Published requirement descriptionPartial demolition of the two reactor buildings, reducing their overall height , together with an extensive package of civil new build and remedial works.
CPV: Asbestos-removal work · Building construction work · Building demolition and wrecking work and earthmoving work · Concrete repair work · Concrete work · Construction work · Demolition work · Demolition, site preparation and clearance work · Dismantling works · Hire of construction and civil engineering machinery and equipment with operator · Hire of cranes with operator · Reinforced-concrete work · +6 more
The lotProcurement structure
single lot · no lot value publishedLot #1NRS Ltd. is responsible for the safe and compliant decommissioning of Trawsfynydd…Awarded
NRS Ltd. is responsible for the safe and compliant decommissioning of Trawsfynydd Nuclear Power Station in Gwynedd, North Wales. Built in the early 1960’s, the Site ceased generating electricity in 1991 and has been undertaking decommissioning works since. <br/>The next phase of the decommissioning programme will principally feature modification of the two former civil nuclear Reactor Buildings which, in current state, offer safe and secure storage of housed plant. The project will involve the systematic deconstruction and partial demolition of each Reactor Building, delivering a reduced height configuration compliant with existing planning commitments and lessening the visual impact on the landscape. In addition, a package of civil new build and remedial works will be delivered to prolong the durability of the retained structures and reduce disproportionate asset management liability. The end product will offer compliant protection of the stored inventory, ready for successor phases of decommissioning activity on the Site.
What it takes to wini
How this buyer will score bids.
The evaluation criteria and weights exactly as published on the notice, grouped by family (price, quality, social value and so on).
Evaluation split and conditions of participation as published; the tender pack may add morei
How this buyer will score bids.
The evaluation criteria and weights exactly as published on the notice, grouped by family (price, quality, social value and so on).
Published sub-criteria (4)
- Technical: 40%
- Project Management: 23%
- price: 27%
- Social Value: 10%
Published award criteria (4)
- Social Value: 10%
- Technical: 40%
- Project Management: 23%
- Price: 27%
- Price carries 27 of 100 points: a 10% discount moves about 2.7 points. The method statement decides this lot, not the discount.
Price arithmetic assumes straight proportional scoring; the tender pack may use another formula.
Procedure terms & legal framework
From the official record · publisher note attached- Procedure method
- Competitive procedure with negotiation
- Legal basis
- CELEX · 32014L0024 Public Contracts Regulations 2015 (Directive 2014/24/EU)
- Procurement category
- Works
- Notice status
- Awarded
- Procurement threshold
- Unspecified in notice
- Regulatory regime
- Standard
- Commercial structure
- Stand-alone contract (no framework)
- Competition type
- Competitive procedure
- GPA / WTO covered
- Yes (GPA)
- Recurring procurement
- Unspecified in notice
- First published
- 1 Dec 2022, 08:02 GMT
- Last source update
- 7 Oct 2025, 15:41 BST
- FTS notice number
2025/S 000-062969- Classification (CPV)
- Delivery area
- Official registry OCID
ocds-h6vhtk-0389bbFind a Tender
- Review procedure
In accordance with Chapter 6 of the Public Procurement Contracts Regulations 2015 (as amended).
Publisher note: Magnox has an approved strategy for the procurement of the works, and this call for market engagement provides both an opportunity for the supply chain to find out more about the works and for Magnox to learn more about the supply chain and its skills and experience to deliver on these requirements.<br/><br/>Magnox will be holding a market engagement webinar at 14:00 on 15 December 2022. Companies are invited to register for the webinar through the Atamis Message Centre confirming the names of proposed attendees. Registration closes at midday on 15 December 2022.<br/><br/>The Key outcomes from this preliminary market engagement are: <br/>1. Understand whether the market can deliver the scope of works<br/>2. Understand level of supplier interest in tendering for the works <br/>3. Information on how the suppliers can contribute to Social Value<br/><br/>Attendance at the supply chain engagement webinar is not a pre-requisite for being able to submit a tender against any subsequent procurements in relation to this preliminary market engagement. If you are unable to attend the preliminary market engagement webinar, the information pack, along with slides and Q&A will be made available. To facilitate further supply chain engagement, Magnox will also share a list of all those companies that attended the webinar after the event. <br/><br/>Please note that this Notice and the market engagement webinar are in advance of the main competition Contract Notice when the ITT documentation will be made available. There are no ITT documents available with this PIN and suppliers do not need to complete a Selection Questionnaire. Magnox is however looking for feedback from potential suppliers on the event. <br/><br/>Any information gathered through this market consultation exercise may inform internal business planning and any possible subsequent procurement process and will NOT be appraised in any future tender evaluation exercise. Interested parties who choose to participate in the preliminary market consultation do so at their own cost and expense. Magnox shall not be liable for any such costs or expenses under any circumstances.
How it was run
Official notice- Submission deadline
- —
Timeline
23 Mar 2023 → 7 Oct 2025 · 2 dates- Next notice expected23 Mar 2023
- Notice published385 days ago7 Oct 2025, 15:41 BST
Notice history
3 events · 2 releases on Find a Tender · since 7 Oct 2025- Status changed to complete7 Oct 2025, 15:41 BST
- Procurement method changed7 Oct 2025, 15:41 BST
- Buyer details updated7 Oct 2025, 15:41 BST
Commercial outcome & contract awards
Published awards, contracts and bid statistics, not a forecast| Awarded to | Value | Date | Status |
|---|---|---|---|
| Costain Limited | £71,813,292 † | — | Awarded |
Contracts
Contract 062969-2025-1 · Costain Limited
- Signed
- 2 Oct 2025
- Value
- £71,813,292
- Status
- active
Bid statistics published by the authority
| Bids | SME | VCSE | Valid bid range |
|---|---|---|---|
| 3bids | 0 | — | — |
Contracting authority & participating public bodies
2 public bodies on the noticeConsortium members and other public bodies
- Nuclear Restoration Services LimitedContracting authorityBody governed by public lawNuclear Decommissioning
Dispute resolution & review bodies
- London Court of International ArbitrationMediation body
Bidders & participating suppliers
1 commercial party on the notice- Costain LimitedAwarded supplier
Official documents & specifications
Official links; attachments are not copiedNo document links were published on the notice.