Costain Secures £700M TfL Station Upgrade Framework

LONDON, UK – Costain confirmed it is one of three suppliers awarded a place on Transport for London’s (TfL) new multi-discipline framework, valued at approximately £700 million. The framework covers design and construction for major infrastructure upgrades, including work at South Kensington tube station and projects enabling TfL’s step-free access programme. Contracts will be awarded over a two-year term, with an option for a two-year extension.

What Does This Contract Cover?

The framework combines design and construction services for TfL’s capital infrastructure upgrades, encompassing station modernisation, accessibility improvements, and related civil engineering works. Confirmed early tasks include the refurbishment of South Kensington tube station and delivery of works that advance TfL’s step-free access programme. Costain’s remit covers design, engineering, programme delivery, and supply chain management, drawing on methods previously applied to the A40 Westway refurbishment.

Key Contract Data

How Does This Compare to Similar Contracts?

TfL’s £700 million design-and-construction framework outranks the East West Rail strategic delivery partner consultancy framework, which sought a partner for a deal potentially worth up to £300 million, with actual work order totals estimated between £150 million and £200 million (Source: East West Rail, 2025). Unlike the East West Rail framework, which focuses on consultancy and delivery partner roles, TfL’s new vehicle bundles design and construction into a single, multi-discipline procurement, directly awarding build work rather than advisory scopes. Costain’s A40 Westway modernization—completed for TfL using production thinking—provides a reference point for the expected delivery model, though no directly comparable London Underground station-upgrade framework value has been publicly reported in the past five years.

Editor’s Analysis

The framework signals TfL’s intent to accelerate station accessibility works using a streamlined procurement route that blends design and construction under a single umbrella. The two-year initial term, with an optional extension, suggests a programme geared toward shorter-cycle upgrades rather than multi-decade megaprojects, aligning with the broader UK infrastructure trend where quick-win projects are prioritized to unlock near-term capacity and compliance gains. The £455 billion net zero construction pipeline—which includes £56 billion in transmission and rail-related work over five years (Source: UK Net Zero Construction Pipeline, 2025)—provides the macro backdrop: transport agencies are packaging work into flexible frameworks to capture available supply chain capacity before larger programmes compete for resources.

FAQ

Q: Which companies sit alongside Costain on the TfL framework?
A: The identities of the other two suppliers have not been publicly disclosed.

Q: What specific stations or projects will Costain deliver?
A: Confirmed project scopes include upgrades at South Kensington tube station and enabling works for TfL’s step-free access programme. Further project allocations will be awarded through framework call-offs over the term.

Q: Does this framework commit Costain to a fixed volume of work?
A: No. The framework has a total ceiling value of approximately £700 million, but individual work orders are not guaranteed and are awarded over the initial two-year term (plus any extension).