Planning

London Overground Core Windrush Line Transmission Design and Build

TRANSPORT FOR LONDON

This public procurement record has 2 releases in its history.

Planning

21 Aug 2025 at 11:30

UK2 - Preliminary Market Engagement Notice
Planning

21 May 2025 at 13:47

UK1 - Pipeline Notice
Summary of the contracting process

Transport for London (TfL) is in the planning stage of a procurement process for the "London Overground Core Windrush Line Transmission Design and Build" project. The tender, identified as WS2093401844, falls under the industry category of urban railway works, with the contracting work to occur in the Greater London area. The process is specifically tailored to the utilities sector and considers works above the procurement threshold. Initial market engagement via the Railway Industry Supplier Qualification Scheme (RISQS) occurred in June 2025, with formal procurement anticipated to begin in December 2025. Potential contractors have been shortlisted, with activities scheduled to transition from planning to execution with a contract period starting in May 2026 and concluding in November 2027.

This tender provides significant opportunities for businesses specialising in railway system upgrades, particularly those adept in design, installation, and commissioning of telecommunications and transmission systems. Companies with expertise in telecomm cabling, UPS installations, and working within urban railway environments are well-suited to compete for this contract. Furthermore, the engagement of 13 industry-specific contractors for initial market sounding positions this tender as an exclusive opportunity for established suppliers within the identified specialisations to capitalise on a high-profile project with TfL, propelling further business growth within the UK's infrastructure projects.

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Notice Information

Notice Title

London Overground Core Windrush Line Transmission Design and Build

Notice Description

London Overground requires a contractor to upgrade the existing Transmission system installed on the Core Windrush Line. It is proposed that the successful contractor will undertake the both the design and build elements of the scheme. Further details will be provided within the MSQ documentation.

Planning Information

On the 30th June 2025, the Railway Industry Supplier Qualification Scheme (RISQS) was used to identify potential contractors to shortlist for participation in the formal procurement process expected to commence in December 2025. In order to do that the following Railway Industry Commodity Classification List (RICCL) codes were selected were: B.C.2.1.6: Lineside Telephones / Commission + Design + Install + Overhaul B.C.2.2.1: Transmission Systems / Commission + Design + Install + Overhaul B.C.2.2.6: Telecomm Cabling (Data Cabling) / Commission + Design + Install + Overhaul B.C.2.2.7: Telecomm Cabling (Fibre) / Commission + Design + Install + Overhaul B.C.2.2.8: UPS / Commission + Design + Install + Overhaul Audit CDM Scope: CDM Principal Contractor AND CDM Principal Designer, Infrastructures: Network Rail, Regions Greater London RISQS identified 13 contractors with the ability to undertake the works identified by London Overground. Market engagement will commence with these suppliers only. Further information about RISQS can be found below https://www.find-tender.service.gov.uk/Notice/007184-2025 A market sounding questionnaire will be issued for the 13 Contractors to complete, submit and express an interest in formally participating with the tender process later in 2025 or early 2026.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-051b27
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/050505-2025
Current Stage
Planning
All Stages
Planning

Procurement Classification

Notice Type
UK2 - Preliminary Market Engagement Notice
Procurement Type
Standard
Procurement Category
Works
Procurement Method
Not Specified
Procurement Method Details
Not specified
Tender Suitability
Not specified
Awardee Scale
Not specified

Common Procurement Vocabulary (CPV)

CPV Divisions

45 - Construction work

CPV Codes

45234120 - Urban railway works

Notice Value(s)

Tender Value
Not specified
Lots Value
Not specified
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
21 Aug 20256 months ago
Submission Deadline
Not specified
Future Notice Date
1 Dec 2025Expired
Award Date
Not specified
Contract Period
30 Apr 2026 - 6 Nov 2027 1-2 years
Recurrence
Not specified

Notice Status

Tender Status
Planned
Lots Status
Planned
Awards Status
Not Specified
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
TRANSPORT FOR LONDON
Contact Name
Steven Davies
Contact Email
stevendavies@tfl.gov.uk
Contact Phone
Not specified

Buyer Location

Locality
LONDON
Postcode
E20 1JN
Post Town
East London
Country
England
Major Region (ITL 1)
TLI London
Basic Region (ITL 2)
TLI4 Inner London - East
Small Region (ITL 3)
TLI41 Hackney and Newham
Delivery Location
TLI London
Local Authority
Newham
Electoral Ward
Stratford Olympic Park
Westminster Constituency
Stratford and Bow

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

View full OCDS Record for this contracting process

Download

The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts. 

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