South Kensington Station Capacity Upgrade Detailed Design and Build

Transport for London
London
Selective procedure
19 October 2026 to 18 June 2028

Two-stage design and build contract for the capacity upgrade of South Kensington Station. The scope encompasses the delivery of detailed design documentation followed by the physical construction works required to increase station capacity and improve passenger flow infrastructure.

Open the official notice

Awarded value: £85m; As published
Published: 21 May 2025; Find a Tender
Awarded: 17 September 2026; Costain Limited
Contract length: 20 months; Ends 18 June 2028

What the buyer is asking for

Provision of comprehensive civil engineering, detailed design, and construction services for major rail station capacity upgrade and infrastructure improvement projects.

Lifecycle

Publishedon Find a Tender
21 May 2025
Contract awardedto Costain Limited
17 September 2026
Contract starts
19 October 2026
Contract ends
18 June 2028

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See the railway construction market: prices, buyers and who wins →

The buyer

Type: Other public body
Railway construction contracts, 24 months: 6
Open railway construction tenders: 0
Typical railway construction contract: £978k

See everything Transport for London buys →

How it compares

147× the typical railway construction contract (£579k).

Cite this contract

Link: https://bidskim.com/tender/948231/south-kensington-station-capacity-upgrade-detailed-design-and-build
Buyer reference: WS2436778117
Open contracting ID: ocds-h6vhtk-051b55
Source: Find a Tender
Last checked: 12 October 2026

Transport for London. South Kensington Station Capacity Upgrade Detailed Design and Build. Contract award, 21 May 2025. BidSkim, https://bidskim.com/tender/948231/south-kensington-station-capacity-upgrade-detailed-design-and-build (accessed 12 October 2026).