---
title: "Class 156 Life Extension - RETB (Radio Electronic Token Block) Data Loggers"
ocid: "ocds-h6vhtk-05e3b6"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05e3b6"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-05e3b6.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-05e3b6.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "SCOTRAIL TRAINS LIMITED"
published: "2026-01-14"
---

# Class 156 Life Extension - RETB (Radio Electronic Token Block) Data Loggers

Buyer: SCOTRAIL TRAINS LIMITED  
Current stage: Award  
OCID: ocds-h6vhtk-05e3b6

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## Summary

ScotRail Trains Limited, headquartered in Glasgow, United Kingdom, has concluded the procurement process for the supply, design integration, and ongoing support of Radio Electronic Token Block (RETB) Data Loggers for their Class 156 fleet of Diesel Multiple Units (DMUs). The contract titled "Class 156 Life Extension – RETB Data Loggers" falls under the industry category of electrical signalling equipment for railways. The procurement method was limited and utilised an award procedure without prior publication of a call for competition due to technical reasons and existing system integration. The contract was signed on 22nd December 2025, marking the completion of the award stage. Notably, one lot was deemed cancelled during the process.

This tender offers significant opportunities for businesses specialising in railway technology and signalling equipment. Companies capable of producing and supporting high-quality electronic equipment that seamlessly integrates with existing railway infrastructure standards would be well-suited to this project. The procurement's focus on sustaining system operations and signal analysis indicates potential avenues for innovation and implementation of advanced technical solutions. Engaging in such contracts could foster partnerships with ScotRail Trains Limited, providing leverage for businesses aiming to expand their footprint within the UK rail sector.

## Notice

The Supply, design integration and ongoing support of RETB (Radio Electronic Token Block) Data Loggers for the Class 156 fleet of Diesel Multiple Units (DMUs).

### Lot Information

Lot 1

The provision of data loggers for the RETB fitted fleet of 5 x Class 153, 15 x Class 156 and 25 x 158 Diesel Multiple Units (DMUs). The data loggers shall capture all relevant parameters to assess the signal strength and signal to noise ratio on the RETB network. The proposed contract will provide continuity of operation of the system based upon the existing solution in which there has been significant prior investment.

### Procurement Information

On the basis of The Utilities Contracts (Scotland) Regulations 2016 in accordance with regulation 48.(1)(c)(ii) a utility may award a contract following a negotiated procedure without prior publication of a call for competition where the works, supplies or services can be supplied only by a particular economic operator due to competition being absent for technical reasons. Single Source is required due to integration with existing systems on the fleet.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/003043-2026 |
| Notice type | Award Notice |
| Procurement type | Standard |
| Procurement category | Goods |
| Procurement method | Limited |
| Procurement method details | Award procedure without prior publication of a call for competition |
| Tender suitability | Not specified |
| Awardee scale | Not specified |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 14 Jan 2026 |
| Submission deadline | Not specified |
| Future notice date | Not specified |
| Award date | 18 Nov 2025 |
| Contract period | Not specified |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | Not specified |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Cancelled |
| Awards status | Active |
| Contracts status | Active |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | SCOTRAIL TRAINS LIMITED |
| Locality | GLASGOW |
| Post town | Glasgow |
| Postcode | G2 6HQ |
| Country | Scotland |
| ITL 1 | TLM Scotland |
| ITL 2 | TLM3 West Central Scotland |
| ITL 3 | TLM32 Glasgow City |
| Local authority | Glasgow City |
| Electoral ward | Anderston/City/Yorkhill |
| Westminster constituency | Glasgow North |
| Delivery location | TLM Scotland |

## CPV Codes

### Divisions

- 34 - Transport equipment and auxiliary products to transportation

### Codes

- 34632200 - Electrical signalling equipment for railways

## Release History

- 14 Jan 2026 at 11:37 - Award - Award Notice - https://www.find-tender.service.gov.uk/Notice/003043-2026
- 18 Nov 2025 at 16:31 - Award - Award Notice - https://www.find-tender.service.gov.uk/Notice/074942-2025

## Notice URLs

- https://api.publiccontractsscotland.gov.uk/v1/Notice?id=ocds-r6ebe6-0000815126
- https://www.publiccontractsscotland.gov.uk/search/Search_AuthProfile.aspx?ID=AA30589

## 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-05e3b6. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-05e3b6.json.