---
title: "Clayton Locos Maintenance & Service"
ocid: "ocds-h6vhtk-06c6aa"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-06c6aa"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-06c6aa.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-06c6aa.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "SELLAFIELD LIMITED"
published: "2026-07-14"
---

# Clayton Locos Maintenance & Service

Buyer: SELLAFIELD LIMITED  
Current stage: Award  
OCID: ocds-h6vhtk-06c6aa

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## Summary

The procurement process was managed by Sellafield Limited, a sub-central government public authority located in Warrington, United Kingdom. The contract, titled "Clayton Locos Maintenance & Service," falls under the services industry category and specifically deals with maintenance and technical support for locomotives. The procurement process is at the award stage, with the contract period set to commence on 17th August 2026 and conclude on 16th August 2030. The direct award method was used due to intellectual property rights exclusive to Clayton Locomotives Limited, the supplier based in Burton upon Trent, Staffordshire. Key dates include the contract award date on 1st July 2026 and the standstill period ending on 23rd July 2026, with a future signature milestone scheduled for 31st July 2026.

This tender creates significant opportunities for businesses specialising in railway traffic control software and locomotive maintenance services, particularly those with expertise in handling bespoke assets and intellectual property-secured technologies. While the direct award limits competition, businesses with similar credentials or potential collaborations with Clayton Locomotives Limited could explore partnership avenues. As the project supports critical operational locomotives at Sellafield, companies in the related sectors could benefit from increased visibility and the potential to secure future maintenance contracts by aligning capabilities with such large-scale, government-backed projects.

## Notice

To deliver all preventive, corrective, and technical support activities necessary to maintain the three locomotives in a safe, reliable, and operational condition. This includes: * Scheduled preventive maintenance * Annual (12 month) servicing * Fault diagnosis and repairs * Software and control system support * Provision of spares, documentation, and technical reporting

### Procurement Information

The locomotives are bespoke assets designed and manufactured by Clayton Locomotives Ltd (formerly Clayton Equipment Ltd), a specialist locomotive builder, and were procured by Sellafield Limited in 2021. These locomotives are used to support all value streams across the Sellafield site and are critical operational assets. Clayton Locomotives retains exclusive ownership of the Intellectual Property software controlling the locomotives' operation. Due to the integration of this software with the locomotives, and the absence of third parties with access to the necessary Intellectual Property, only the original manufacturer is capable of providing safe and compliant maintenance and support services.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/066369-2026 |
| Notice type | UK6 - Contract Award Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Direct |
| Procurement method details | Direct award |
| Tender suitability | SME |
| Awardee scale | SME |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 14 Jul 2026 |
| Submission deadline | Not specified |
| Future notice date | Not specified |
| Award date | 30 Jun 2026 |
| Contract period | 16 Aug 2026 - 16 Aug 2030 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | Not specified |
| Lots value | Not specified |
| Awards value | £477,185 |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Complete |
| Awards status | Pending |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | SELLAFIELD LIMITED |
| Locality | WARRINGTON |
| Post town | Warrington |
| Postcode | WA3 6GR |
| 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 | Not specified |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | CLAYTON LOCOMOTIVES LIMTIED |

## CPV Codes

### Divisions

- 72 - IT services: consulting, software development, Internet and support

### Codes

- 72212140 - Railway traffic control software development services

## Release History

- 14 Jul 2026 at 14:49 - Award - UK6 - Contract Award Notice - https://www.find-tender.service.gov.uk/Notice/066369-2026
- 8 Jul 2026 at 14:44 - Award - UK5 - Transparency Notice - https://www.find-tender.service.gov.uk/Notice/064341-2026

## Documents

- https://www.find-tender.service.gov.uk/Notice/066369-2026
  14th July 2026 - Contract award notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/064341-2026
  8th July 2026 - Transparency notice on Find a Tender

## Notice URLs

- http://www.claytonlocomotives.co.uk
- https://www.gov.uk/government/organisations/sellafield-ltd
- https://www.legislation.gov.uk/ukpga/2023/54/contents

## 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-h6vhtk-06c6aa. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-06c6aa.json.