---
title: "Axle Counter Power Supply Unit Design"
ocid: "ocds-b5fd17-001cf81b-5232-4d78-a0c7-4b8ab05f7658"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-001cf81b-5232-4d78-a0c7-4b8ab05f7658"
markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-001cf81b-5232-4d78-a0c7-4b8ab05f7658.md"
json_url: "https://d3tenders.com/contract/ocds-b5fd17-001cf81b-5232-4d78-a0c7-4b8ab05f7658.json"
source: "Contracts Finder"
current_stage: "Award"
buyer: "TRANSPORT FOR LONDON"
published: "2026-04-30"
---

# Axle Counter Power Supply Unit Design

Buyer: TRANSPORT FOR LONDON  
Current stage: Award  
OCID: ocds-b5fd17-001cf81b-5232-4d78-a0c7-4b8ab05f7658

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## Summary

The public procurement process led by Transport for London involves the design and installation of axle counter power supply units, an essential component for maintaining the reliability of signalling on the Windrush Line. Categorised under engineering design services, this tender centres on the renewal and replacement of 16 units at seven locations across London. Initially concluded as a selective procurement method, a framework agreement call-off was employed, culminating in an award published on 29 April 2026. The contract period is slated from 4 May to 3 November 2026, presenting opportunities to engage with large suppliers like Ramboll UK Limited, who have secured the contract valued at £133,103.95.

This tender offers substantial growth opportunities primarily for engineering firms specialising in signalling systems, particularly those operating in London. With Transport for London as the contracting authority, businesses aligned with niche industry requirements can leverage the framework agreement to secure future projects. SMEs will find this contract accessible given the suitability designation, helping them build a footprint within the London transport infrastructure sector. A successful completion enhances a company's credentials, supporting wider business development and expansion within public sector contracts.

## Notice

The scope involves the renewal and replacement of existing 48V DC signalling Power Supply Units (PSUs), with modern Network Rail-approved equivalents. A total of 16 PSUs are to be replaced across seven locations. These units provide essential power to axle counter evaluators controlling Up and Down lines. The works are intended to ensure the continued reliability, safety, and resilience of the signalling system in line with the Windrush Line core renewal strategy.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Contracts Finder |
| Latest notice | https://www.contractsfinder.service.gov.uk/Notice/3badddfa-d15f-4106-9e10-72dc2d150414 |
| Notice type | Award Notice |
| Procurement type | Framework |
| Procurement category | Services |
| Procurement method | Selective |
| Procurement method details | Call-off from a framework agreement |
| Tender suitability | SME |
| Awardee scale | Large |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 30 Apr 2026 |
| Submission deadline | 22 Oct 2025 |
| Future notice date | Not specified |
| Award date | 31 Mar 2026 |
| Contract period | 3 May 2026 - 3 Nov 2026 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £146,414 |
| Lots value | Not specified |
| Awards value | £133,103 |
| Contracts value | Not specified |

## Status

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

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | TRANSPORT FOR LONDON |
| Locality | LONDON |
| Post town | East London |
| Postcode | E20 1JN |
| Country | England |
| ITL 1 | TLI London |
| ITL 2 | TLI4 Inner London - East |
| ITL 3 | TLI41 Hackney and Newham |
| Local authority | Newham |
| Electoral ward | Stratford Olympic Park |
| Westminster constituency | Stratford and Bow |
| Delivery location | TLI London |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | RAMBOLL |

## CPV Codes

### Divisions

- 71 - Architectural, construction, engineering and inspection services

### Codes

- 71320000 - Engineering design services

## Release History

- 30 Apr 2026 at 10:10 - AwardUpdate - Award Notice - https://www.contractsfinder.service.gov.uk/Notice/3badddfa-d15f-4106-9e10-72dc2d150414
- 29 Apr 2026 at 14:18 - Award - Award Notice - https://www.contractsfinder.service.gov.uk/Notice/3badddfa-d15f-4106-9e10-72dc2d150414

## Documents

- https://www.contractsfinder.service.gov.uk/Notice/3badddfa-d15f-4106-9e10-72dc2d150414
  30th April 2026 - Awarded contract notice on Contracts Finder

## 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-b5fd17-001cf81b-5232-4d78-a0c7-4b8ab05f7658. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-b5fd17-001cf81b-5232-4d78-a0c7-4b8ab05f7658.json.