---
title: "Piccadilly Line Upgrade - Transformer Rooms Detailed Design and Build"
ocid: "ocds-h6vhtk-051c54"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-051c54"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-051c54.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-051c54.json"
source: "Find A Tender Service"
current_stage: "Tender"
buyer: "TRANSPORT FOR LONDON"
published: "2026-02-26"
---

# Piccadilly Line Upgrade - Transformer Rooms Detailed Design and Build

Buyer: TRANSPORT FOR LONDON  
Current stage: Tender  
OCID: ocds-h6vhtk-051c54

[View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-h6vhtk-051c54)  
[Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-051c54.json)

## Summary

Transport for London (TfL) is overseeing the procurement process for the "Piccadilly Line Upgrade - Transformer Rooms Detailed Design and Build" project. This initiative, planning to enhance the infrastructure at Piccadilly Circus, Finsbury Park, Turnpike Lane, and Hounslow West, was initially in the planning stage, with details published in May 2025. Unfortunately, this tender was later cancelled in February 2026 after a thorough review by TfL. The procurement process, initially classified under the works category, aimed to attract bids for constructing transformer rooms to support increased load demand and accommodate future growth. The contract period was slated to begin in February 2026 and end in February 2028.

This project presents substantial opportunities for construction companies specialising in infrastructure upgrades and large-scale electrical works to engage with TfL. The transformation rooms project aimed to increase capacity, reduce cable upgrades, and enhance the efficiency of power delivery systems on London’s Piccadilly Line, aligning with utilities sector special regime regulations. Despite its cancellation, businesses well-versed in public sector projects may find similar future tenders advantageous for growth, given the need for expertise in comparable works across the transport network.

## Notice

The four new transformer rooms will support the increased load demand and provide capacity for growth, which is not currently possible due to the insufficient power delivery points on the current low voltage substation switchboards. The Transformer Rooms are located at: Piccadilly Circus, Finsbury Park, Turnpike Lane and Hounslow West. In addition, the new transformer rooms are reducing the number of cable upgrades required and free up cable route capacity.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/017368-2026 |
| Notice type | UK12 - Procurement Termination Notice |
| Procurement type | Standard |
| Procurement category | Works |
| Procurement method | Not Specified |
| Procurement method details | Not specified |
| Tender suitability | Not specified |
| Awardee scale | Not specified |
| All stages | Planning, Tender |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 26 Feb 2026 |
| Submission deadline | Not specified |
| Future notice date | 1 Jun 2025 |
| Award date | Not specified |
| Contract period | 2 Feb 2026 - 1 Feb 2028 |
| 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 | Withdrawn |
| Lots status | Withdrawn |
| Awards status | Cancelled |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | TRANSPORT FOR LONDON |
| Additional buyers | Missing |
| 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 | Not specified |

## CPV Codes

### Divisions

- 45 - Construction work

### Codes

- 45000000 - Construction work

## Release History

- 26 Feb 2026 at 14:00 - TenderCancellation - UK12 - Procurement Termination Notice - https://www.find-tender.service.gov.uk/Notice/017368-2026
- 21 May 2025 at 18:23 - Planning - UK1 - Pipeline Notice - https://www.find-tender.service.gov.uk/Notice/024388-2025

## Documents

- https://www.find-tender.service.gov.uk/Notice/017368-2026
  26th February 2026 - Procurement termination notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/024388-2025
  21st May 2025 - Pipeline notice on Find a Tender

## Notice URLs

- 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-051c54. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-051c54.json.