--- title: "High Speed OCS Design, Construction, Testing & Commissioning Approved Body Engagement" ocid: "ocds-b5fd17-3202f230-5093-461b-92ae-37e54e4a19a8" canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-3202f230-5093-461b-92ae-37e54e4a19a8" markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-3202f230-5093-461b-92ae-37e54e4a19a8.md" json_url: "https://d3tenders.com/contract/ocds-b5fd17-3202f230-5093-461b-92ae-37e54e4a19a8.json" source: "Contracts Finder" current_stage: "Tender" buyer: "COLAS RAIL LIMITED" published: "2026-06-04" --- # High Speed OCS Design, Construction, Testing & Commissioning Approved Body Engagement Buyer: COLAS RAIL LIMITED Current stage: Tender OCID: ocds-b5fd17-3202f230-5093-461b-92ae-37e54e4a19a8 [View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-b5fd17-3202f230-5093-461b-92ae-37e54e4a19a8) [Download OCDS JSON](https://d3tenders.com/contract/ocds-b5fd17-3202f230-5093-461b-92ae-37e54e4a19a8.json) ## Summary Colas Rail Limited is conducting a public procurement process for the project titled “High Speed OCS Design, Construction, Testing & Commissioning Approved Body Engagement”. This tender falls under the industry category of monitoring and control services, with additional classifications including technical inspection and testing, architectural and construction engineering, as well as railway engineering services. The procurement process is at the tender stage, with a submission deadline set for 17 June 2026, after being published on 4 June 2026. The project location encompasses the United Kingdom, British Overseas Territories, Channel Islands, Isle of Man, Europe, and the Rest of the World. The procurement involves a service contract with an estimated value ranging between £150,000 and £250,000, set to commence on 13 July 2026 and finish by 30 June 2028. This tender presents an excellent opportunity for businesses, especially those classified as SMEs, to engage in a significant contract supporting the HS2 project. Companies specialising in interoperability constituents for rail systems, particularly those with expertise in technical inspection, testing, and railway engineering, would find this contract highly beneficial for growth and expansion. The process, which requires the procurement of an Approved Body to ensure conformity with UK standards, is ideal for firms looking to showcase their credentials in delivering sophisticated engineering and safety services. Participating businesses will operate under the terms and conditions of the Colas Rail CR2 Professional Services Agreement, including clauses pertinent to HS2 initiatives. ## Notice Colas Rail are looking to engage with an Approved Body to support with obtaining UK declaration of conformity for its Interoperability Constituents (ICs) relating to specific elements of first principle Overhead Catenary System (OCS) design elements and to provide re-certification of the existing TSI compliant system design to NTSN in support of its OCS Design, Construction, Testing & Commissioning activities on behalf of HS2. Additional information: The services shall be delivered in accordance with Colas Rail CR2 Professional Services Agreement Terms & Conditions, including applicable HS2-specific provisions; copies will be issued to shortlisted suppliers. Suppliers to submit their tender proposal by the tender deadline of Wednesday 17 June 2026 by email to tr.procurement@colasrail.com. If you have any questions, please send them to tr.procurement@colasrail.com and we shall endeavour to respond to them at the earliest. ## Key Details | Field | Value | | --- | --- | | Publication source | Contracts Finder | | Latest notice | https://www.contractsfinder.service.gov.uk/Notice/5e2d38d2-8b2f-4d4b-bc46-3d872b0b82e5 | | Notice type | Tender Notice | | Procurement type | Standard | | Procurement category | Services | | Procurement method | Not Specified | | Procurement method details | Not specified | | Tender suitability | SME | | Awardee scale | Not specified | | All stages | Tender | ## Dates | Field | Value | | --- | --- | | Publication date | 4 Jun 2026 | | Submission deadline | 17 Jun 2026 | | Future notice date | Not specified | | Award date | Not specified | | Contract period | 12 Jul 2026 - 30 Jun 2028 | | Recurrence | Not specified | ## Values | Field | Value | | --- | --- | | Tender value | £250,000 | | Lots value | Not specified | | Awards value | Not specified | | Contracts value | Not specified | ## Status | Field | Value | | --- | --- | | Tender status | Active | | Lots status | Not specified | | Awards status | Not specified | | Contracts status | Not specified | ## Buyer | Field | Value | | --- | --- | | Main buyer | COLAS RAIL LIMITED | | Locality | LONDON | | Post town | South West London | | Postcode | SW1H 0EX | | Country | England | | ITL 1 | TLI London | | ITL 2 | TLI3 Inner London - West | | ITL 3 | TLI35 Westminster and City of London | | Local authority | Westminster | | Electoral ward | St James's | | Westminster constituency | Cities of London and Westminster | | Delivery location | Not specified | ## CPV Codes ### Divisions - 71 - Architectural, construction, engineering and inspection services ### Codes - 71000000 - Architectural, construction, engineering and inspection services - 71311230 - Railway engineering services - 71317200 - Health and safety services - 71630000 - Technical inspection and testing services - 71700000 - Monitoring and control services ## Release History - 4 Jun 2026 at 07:20 - Tender - Tender Notice - https://www.contractsfinder.service.gov.uk/Notice/5e2d38d2-8b2f-4d4b-bc46-3d872b0b82e5 ## Documents - https://www.contractsfinder.service.gov.uk/Notice/5e2d38d2-8b2f-4d4b-bc46-3d872b0b82e5 4th June 2026 - Opportunity notice on Contracts Finder - https://www.competefor.com/business/viewOpportunityDetailsSupplier.html?id=113358499 Please follow this link to view the notice. ## 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-b5fd17-3202f230-5093-461b-92ae-37e54e4a19a8. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-b5fd17-3202f230-5093-461b-92ae-37e54e4a19a8.json.