---
title: "Southern Region Passive Thermal Management Solutions for Legacy Lineside Signalling Equipment Housings (Location Cases)"
ocid: "ocds-h6vhtk-054443"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-054443"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-054443.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-054443.json"
source: "Find A Tender Service"
current_stage: "Tender"
buyer: "NETWORK RAIL INFRASTRUCTURE LIMITED"
published: "2025-11-14"
---

# Southern Region Passive Thermal Management Solutions for Legacy Lineside Signalling Equipment Housings (Location Cases)

Buyer: NETWORK RAIL INFRASTRUCTURE LIMITED  
Current stage: Tender  
OCID: ocds-h6vhtk-054443

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## Summary

Network Rail Infrastructure Limited is currently in the tender stage of procuring "Southern Region Passive Thermal Management Solutions for Legacy Lineside Signalling Equipment Housings (Location Cases)." This procurement process aims to address the increasing thermal stress experienced by legacy lineside equipment housings due to changing climate conditions. The solutions sought should be passive, avoiding active cooling systems due to operational constraints, and retrofittable without compromising safety. With a budget of £14,000,000, the project is located in London and the Southern Region of the United Kingdom, specifically targeting goods within the cooling and ventilation equipment category. The competitive flexible procedure allows for early down-selection of suppliers through a Procurement Specific Questionnaire (PSQ) stage with an expression of interest deadline set for 12 December 2025.

This procurement offers substantial opportunities for businesses specialising in innovative cooling and thermal management solutions. Small and medium-sized enterprises (SMEs) and voluntary, community, and social enterprises (VCSEs) are encouraged to participate. Successful bidders will have a chance to contribute to critical infrastructure maintenance, making over 15,000 retrofits in the Southern Region and potentially more nationwide. With the framework agreement supporting both competitive and direct award processes, firms with relevant experience and capability stand to benefit from long-term contracts starting in July 2026, fostering sustainable growth and operational expansion in the utility sector.

## Notice

Legacy lineside equipment housings (dating from the 1960s-2000s) on the GB rail network are experiencing increasing thermal stress due to hotter, longer summers and changing climate patterns. These housings were not designed for elevated ambient temperatures or prolonged thermal loads and are increasingly at risk of overheating, which may degrade the reliability or lifespan of the sensitive signalling and telecoms equipment inside. In Kent Route, there are over 5,000 and in Southern Region there are over 15,000 of these housings (also known as Location Cases), and nationally over 60,000. Network Rail is seeking passive thermal management solutions that can be retrofitted to existing housings without compromising security, structural integrity, or existing cable penetrations. Active cooling systems are not desirable due to power constraints, maintenance burden, and whole-life cost implications.

### Lot Information

Lot 1

Renewal: The proposal is to award a 2-year Contract, with an extension option of 2+2 year (2+2+2) as if successful it may lead to wider delivery across the organisation.

### Planning Information

The Market Engagement for the "Passive Thermal Management Solutions for Legacy Lineside Signalling Equipment Housings (Location Cases)" will be conducted through the completion of a questionnaire.
This questionnaire must be returned by 20th June 2025.
To access the Market Engagement submission document, please follow these steps:
1. Visit our Bravo site using the link provided below.
Link to Bravo: https://networkrail.bravosolution.co.uk/web/login.html
2. On the Bravo login page, locate and select the "View Current Opportunities" option at the bottom left of the page. Find and select the link for ‘Southern Region Passive Thermal Management Solutions for Legacy Lineside Signalling Equipment Housings (Location Cases)’ to access the documents available for the market engagement exercise.
There is no need to log in to Bravo to access the opportunity. You can view and download the necessary documents without logging in.
An overview of the requirements and the instructions for returning the market engagement information are detailed within the PDF document titled ‘Passive Thermal Management Solutions Market Engagement’.
The questionnaire that is required to be completed and returned is provided in a separate Word document titled ‘Appendix 1 - Passive Thermal Management Solutions Market Engagement Submission Form’.
Please ensure you follow these instructions carefully to submit your information correctly.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/073974-2025 |
| Notice type | UK4 - Tender Notice |
| Procurement type | Framework |
| Procurement category | Goods |
| Procurement method | Selective |
| Procurement method details | Competitive flexible procedure |
| Tender suitability | SME, VCSE |
| Awardee scale | Not specified |
| All stages | Planning, Tender |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 14 Nov 2025 |
| Submission deadline | 2 Dec 2025 |
| Future notice date | 20 Jun 2025 |
| Award date | Not specified |
| Contract period | 2 Jul 2026 - 3 Jul 2028 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £14,000,000 |
| Lots value | £14,000,000 |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Active |
| Lots status | Active |
| Awards status | Not specified |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | NETWORK RAIL INFRASTRUCTURE LIMITED |
| Locality | LONDON |
| Post town | South East London |
| Postcode | SE1 8SW |
| Country | England |
| ITL 1 | TLI London |
| ITL 2 | TLI4 Inner London - East |
| ITL 3 | TLI45 Lambeth |
| Local authority | Lambeth |
| Electoral ward | Waterloo & South Bank |
| Westminster constituency | Vauxhall and Camberwell Green |
| Delivery location | Not specified |

## CPV Codes

### Divisions

- 42 - Industrial machinery

### Codes

- 42500000 - Cooling and ventilation equipment

## Release History

- 14 Nov 2025 at 13:05 - Tender - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/073974-2025
- 6 Jun 2025 at 10:34 - Planning - UK2 - Preliminary Market Engagement Notice - https://www.find-tender.service.gov.uk/Notice/030514-2025

## Documents

- https://www.find-tender.service.gov.uk/Notice/073974-2025
  14th November 2025 - Tender notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/030514-2025
  6th June 2025 - Preliminary market engagement notice on Find a Tender

## Notice URLs

- https://networkrail.bravosolution.co.uk
- https://networkrail.bravosolution.co.uk/web/login.html
- https://www.legislation.gov.uk/ukpga/2023/54/contents
- https://www.networkrail.co.uk/

## 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-054443. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-054443.json.