Section one: Contracting authority
one.1) Name and addresses
Nuclear Restoration Services Limited
Hinton House, Birchwood Park Avenue, Risley
Warrington
WA3 6GR
Contact
Fiona Pearse
Country
United Kingdom
Region code
UK - United Kingdom
National registration number
02264251
Internet address(es)
Main address
https://www.gov.uk/government/organisations/nuclear-restoration-services
Buyer's address
https://www.gov.uk/government/organisations/nuclear-restoration-services
one.4) Type of the contracting authority
Body governed by public law
one.5) Main activity
Other activity
Nuclear Decommissioning
Section two: Object
two.1) Scope of the procurement
two.1.1) Title
Trawsfynydd Reactor Buildings Height Reduction
two.1.2) Main CPV code
- 45111100 - Demolition work
two.1.3) Type of contract
Works
two.1.4) Short description
Partial demolition of the two reactor buildings, reducing their overall height , together with an extensive package of civil new build and remedial works.
two.1.6) Information about lots
This contract is divided into lots: No
two.1.7) Total value of the procurement (excluding VAT)
Value excluding VAT: £71,813,292
two.2) Description
two.2.2) Additional CPV code(s)
- 45262330 - Concrete repair work
- 45111000 - Demolition, site preparation and clearance work
- 45262110 - Scaffolding dismantling work
- 45262120 - Scaffolding erection work
- 45500000 - Hire of construction and civil engineering machinery and equipment with operator
- 45111200 - Site preparation and clearance work
- 45200000 - Works for complete or part construction and civil engineering work
- 45113000 - Siteworks
- 45262660 - Asbestos-removal work
- 45510000 - Hire of cranes with operator
- 45262100 - Scaffolding work
- 45262310 - Reinforced-concrete work
- 45262300 - Concrete work
- 45111300 - Dismantling works
- 45111100 - Demolition work
- 45110000 - Building demolition and wrecking work and earthmoving work
- 45000000 - Construction work
- 45210000 - Building construction work
two.2.3) Place of performance
NUTS codes
- UKL12 - Gwynedd
Main site or place of performance
Trawsfynydd Site
Blaenau Ffestiniog
Gwynedd
LL41 6NT
two.2.4) Description of the procurement
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.
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.
two.2.5) Award criteria
Quality criterion - Name: Social Value / Weighting: 10%
Quality criterion - Name: Technical / Weighting: 40%
Quality criterion - Name: Project Management / Weighting: 23%
Price - Weighting: 27%
two.2.11) Information about options
Options: No
two.2.13) Information about European Union Funds
The procurement is related to a project and/or programme financed by European Union funds: No
Section four. Procedure
four.1) Description
four.1.1) Type of procedure
Competitive procedure with negotiation
four.1.8) Information about the Government Procurement Agreement (GPA)
The procurement is covered by the Government Procurement Agreement: Yes
four.2) Administrative information
four.2.1) Previous publication concerning this procedure
Notice number: 2022/S 000-034017
four.2.9) Information about termination of call for competition in the form of a prior information notice
The contracting authority will not award any further contracts based on the above prior information notice
Section five. Award of contract
A contract/lot is awarded: Yes
five.2) Award of contract
five.2.1) Date of conclusion of the contract
2 October 2025
five.2.2) Information about tenders
Number of tenders received: 3
Number of tenders received from SMEs: 0
Number of tenders received from tenderers from other EU Member States: 0
Number of tenders received from tenderers from non-EU Member States: 0
The contract has been awarded to a group of economic operators: No
five.2.3) Name and address of the contractor
Costain Limited
Seventh Floor, 70 St Mary Axe, London, United Kingdom, EC3A 8BE
London
EC3A 8BE
Country
United Kingdom
NUTS code
- UK - United Kingdom
National registration number
00610201
The contractor is an SME
No
five.2.4) Information on value of contract/lot (excluding VAT)
Initial estimated total value of the contract/lot: £53,000,000
Total value of the contract/lot: £71,813,292
Section six. Complementary information
six.4) Procedures for review
six.4.1) Review body
Nuclear Restoration Services Limited
Hinton House, Birchwood Park Avenue, Risley
Warrington
WA3 6GR
nrs.supplier.queries@nrservices.uk
Country
United Kingdom
Internet address
https://www.gov.uk/government/organisations/nuclear-restoration-services
six.4.2) Body responsible for mediation procedures
London Court of International Arbitration
1 Paternoster Lane
London
EC4M 7BQ
Country
United Kingdom
Internet address
six.4.3) Review procedure
Precise information on deadline(s) for review procedures
In accordance with Chapter 6 of the Public Procurement Contracts Regulations 2015 (as amended).