---
title: "Class 156 Life Extension - Amplifier upgrades"
ocid: "ocds-h6vhtk-05cd89"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05cd89"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-05cd89.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-05cd89.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "SCOTRAIL TRAINS LIMITED"
published: "2025-10-15"
---

# Class 156 Life Extension - Amplifier upgrades

Buyer: SCOTRAIL TRAINS LIMITED  
Current stage: Award  
OCID: ocds-h6vhtk-05cd89

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## Summary

ScotRail Trains Limited, located in Glasgow, United Kingdom, has completed the procurement process for the "Class 156 Life Extension – Amplifier upgrades" project. This project falls under the industry category of Amplifiers, classified with the CPV code 32343000. The procurement involved the supply, design, and support of automatic amplifiers for its Class 156 fleet of Diesel Multiple Units, aimed at improving the public address system. The tender stage reached completion as of 15th October 2025, with the contract having been signed on 6th October 2025. The procurement was conducted through a limited method, specifically an award procedure without prior publication, due to the integration needs and intellectual property rights held by the existing equipment manufacturer.

This tender represents a significant opportunity for businesses involved in railway technology and communications equipment, particularly those specialising in integration with existing systems. While the procurement method designates a single-source procedure, it underscores the importance of establishing and maintaining strategic partnerships with major transport operators like ScotRail. Companies that are original equipment manufacturers (OEMs) or those holding specialised intellectual property rights in railway systems stand to benefit greatly from such targeted opportunities. Despite the specific nature of this tender, it highlights avenues for businesses to focus on niche markets where they hold exclusive capabilities, thus fostering growth through specialised, high-value contracts in the railway services sector.

## Notice

The Supply, Design and ongoing support of Automatic Amplifiers for the Class 156 fleet of Diesel Multiple Units (DMUs).

### Lot Information

Lot 1

The provision for Fitment of Automatic Amplifiers is to address low Public Address (PA) Speech Transmission Index (STI). Also, Mobile Realtime Communications Module (MRCM comms) for the Class 156 fleet of Diesel Multiple Units (DMUs). The proposed contract will provide continuity of operation of the system based upon the existing solution in which there has been significant prior investment. The Saloon Amplifier Call for aid Units (SACUs) and Saloon Amplifiers (SAs) will automatically amplify the voltage level of the manual PA to be at a set volume, regardless of the voltage entering the amplifier. The purpose of this is to maintain proper PA volume in multiple.

### Procurement Information

Single Source is required due to integration with existing Amplifiers and systems on the fleet. The Contractor is the OEM for the existing passenger information system equipment and hold the IPR for the system. Therefore, no other provider can supply and maintain the equipment which will integrate with the existing system.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/065702-2025 |
| 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 | 15 Oct 2025 |
| Submission deadline | Not specified |
| Future notice date | Not specified |
| Award date | 5 Oct 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

- 32 - Radio, television, communication, telecommunication and related equipment

### Codes

- 32343000 - Amplifiers

## Release History

- 15 Oct 2025 at 15:28 - Award - Award Notice - https://www.find-tender.service.gov.uk/Notice/065702-2025

## Notice URLs

- http://www.ScotRail.co.uk
- https://api.publiccontractsscotland.gov.uk/v1/Notice?id=ocds-r6ebe6-0000812696
- 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-05cd89. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-05cd89.json.