Upcoming
London Overground Core Windrush Line Transmission Design and Build
Transport for London · Public undertaking
In brief
Transport for London has announced plans to buy construction work. This is an early notice: there is nothing to bid on yet, but it tells you a tender may follow.
The notice does not state a value.
The contract runs for 20 months, starting 2 November 2026.
Built from the notice's own fields. Always check the official notice before you bid.
Can I win this?
Competition
Usually low: a median of 2 bids per contract for this buyer (from 72 awards in the last 12 months).
What the notice says
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.
How to bid
- Read the full notice on Find a Tender, including any tender documents it links to.
- Register your organisation on the Central Digital Platform (through Find a Tender) if you have not already. Suppliers need to be registered to take part in procurements under the Procurement Act 2023.
- Follow the submission instructions in the notice; it does not name an e-tendering portal.
Timeline
- Preliminary market engagement notice · UK2, notice 035304-2026
About the buyer
Transport for LondonLast 12 months
Procurements
377Awards
150Suppliers it has used most for construction
- Delcore Fire Engineering Ltd2 contracts
- Siemens Mobility Limited2 contracts
- Alan Dick Communications Limited1 contract
- Amalgamated Construction Ltd1 contract
- Amey Rail Limited1 contract
Similar open tenders
All open construction tenders- £15mestimated
- £100kestimated
- £275kestimated
- £8mestimated
- £160kestimated
From notice 035304-2026 on Find a Tender, first published 17 April 2026. We last checked for changes on 28 September 2026.