--- title: "Site Works" ocid: "ocds-b5fd17-01b5fed9-dfa1-4015-8529-32f2d61f0034" canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-01b5fed9-dfa1-4015-8529-32f2d61f0034" markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-01b5fed9-dfa1-4015-8529-32f2d61f0034.md" json_url: "https://d3tenders.com/contract/ocds-b5fd17-01b5fed9-dfa1-4015-8529-32f2d61f0034.json" source: "Contracts Finder" current_stage: "Award" buyer: "UNITED KINGDOM NATIONAL NUCLEAR LABORATORY LIMITED" published: "2026-05-12" --- # Site Works Buyer: UNITED KINGDOM NATIONAL NUCLEAR LABORATORY LIMITED Current stage: Award OCID: ocds-b5fd17-01b5fed9-dfa1-4015-8529-32f2d61f0034 [View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-b5fd17-01b5fed9-dfa1-4015-8529-32f2d61f0034) [Download OCDS JSON](https://d3tenders.com/contract/ocds-b5fd17-01b5fed9-dfa1-4015-8529-32f2d61f0034.json) ## Summary The recent contract award concerns the United Kingdom National Nuclear Laboratory Limited (UKNNL) for "Site Works", focused on the construction industry category with ID 45000000. The procurement process, specifically a selective tender via the UK's dynamic purchasing system, pertains to site works valued at £1 million. This contract pertains to maintaining, upgrading, and repurposing facilities across laboratories located in the North West region of the United Kingdom. The procurement phase is currently at the award stage, with the contract running from 1st May 2026 to 30th April 2028. Key tasks include electrical, mechanical, process installation, decommissioning, roofing, and cladding works, with the contract obligation lasting 24 months and potential for a 12-month extension. This procurement process offers significant opportunities for businesses in the construction sector, particularly for those capable of providing specialised site works and facility management services. Small and medium-sized enterprises (SMEs) are well-suited to participate, given the suitability considerations prioritising them in the procurement criteria. Engaging in this contract could facilitate entry and growth in government contracts, especially given UKNNL's pivotal role in managing the UK's nuclear research and infrastructure capabilities. The ongoing need for maintaining critical national infrastructure underscores robust and ongoing opportunities for qualified contractors. ## Notice This contract has been awarded via further competition under the UKNNL NNLC484D - Operations, Site Work and Facilities Management Dynamic Purchasing System. Background UKNNL is the government's lead civil laboratory for nuclear fission. We provide the science, technology and world-leading laboratories to support the country's civil nuclear programmes and ensure they are delivered safely and cost-effectively. UKNNL is the custodians of national nuclear research, development, capabilities and infrastructure, with the value of the nuclear facilities we manage totalling PS2bn. The Laboratory spans across the UK with a mixture of office and laboratory facilities. Our Laboratories are: - Workington Laboratory - Central Laboratory - Windscale Laboratory - Preston Laboratory It is these laboratories which need external supply chain support to be maintained, upgraded and repurposed. This contract is for the site works required to support these facilities in maintaining operation. This contract is for site works, up to a value of PS1 million pounds. Contract Details The contract will run for 24 months, with the option to extend by up to 12 further months. This contract is to include works, such as: * Electrical Installation Works * Mechanical Installation Works * Process Installation Works * Decommissioning Works * Roofing and cladding works ## Key Details | Field | Value | | --- | --- | | Publication source | Contracts Finder | | Latest notice | https://www.contractsfinder.service.gov.uk/Notice/9b7c3108-e0da-44a2-ab1f-3628f38fdc2a | | Notice type | Award Notice | | Procurement type | Dynamic | | Procurement category | Works | | Procurement method | Selective | | Procurement method details | Call-off from a dynamic purchasing system | | Tender suitability | SME | | Awardee scale | Large | | All stages | Award | ## Dates | Field | Value | | --- | --- | | Publication date | 12 May 2026 | | Submission deadline | 21 Apr 2026 | | Future notice date | Not specified | | Award date | 26 Apr 2026 | | Contract period | 30 Apr 2026 - 30 Apr 2028 | | Recurrence | Not specified | ## Values | Field | Value | | --- | --- | | Tender value | £1,000,000 | | Lots value | Not specified | | Awards value | £1,000,000 | | Contracts value | Not specified | ## Status | Field | Value | | --- | --- | | Tender status | Complete | | Lots status | Not specified | | Awards status | Active | | Contracts status | Not specified | ## Buyer | Field | Value | | --- | --- | | Main buyer | UNITED KINGDOM NATIONAL NUCLEAR LABORATORY LIMITED | | Locality | WARRINGTON | | Post town | Warrington | | Postcode | WA3 6AE | | Country | England | | ITL 1 | TLD North West (England) | | ITL 2 | TLD6 Cheshire | | ITL 3 | TLD61 Warrington | | Local authority | Warrington | | Electoral ward | Birchwood | | Westminster constituency | Warrington North | | Delivery location | TLD North West (England) | ## Supplier | Field | Value | | --- | --- | | Number of suppliers | 1 | | Supplier names | SHEPLEYS ENGINEERS | ## CPV Codes ### Divisions - 45 - Construction work ### Codes - 45000000 - Construction work ## Release History - 12 May 2026 at 09:29 - Award - Award Notice - https://www.contractsfinder.service.gov.uk/Notice/9b7c3108-e0da-44a2-ab1f-3628f38fdc2a ## Documents - https://www.contractsfinder.service.gov.uk/Notice/9b7c3108-e0da-44a2-ab1f-3628f38fdc2a 12th May 2026 - Awarded contract notice on Contracts Finder ## Provenance This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-b5fd17-01b5fed9-dfa1-4015-8529-32f2d61f0034. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-b5fd17-01b5fed9-dfa1-4015-8529-32f2d61f0034.json.