Find a TenderAwardedContract award notice
Published 23 Sept 2026, 11:19 BST

Official UK procurement notice

South Kensington Station Capacity Upgrade Design and Build

Authority: London Underground Limited (Public body)·On behalf of: Transport for London

WorksAward under frameworkUtilities
Awarded value£85,000,000published award · exc. VAT
Awarded 17 Sept 2026
Awarded to Costain Limited
Contract term 4 yrs 3 mostarts 31 Dec 2025

What is being bought

Published requirement description

This notice confirms London Underground Limited's (LUL) intention to award the South Kensington Station Upgrade two-stage Design and Build contract to Costain Limited as a call-off contract under TfL's Infrastructure Improvement Framework.

The proposed contract will be delivered through two (2) stages:

• Stage 1: Detailed Design (NEC3 ECC Main Option E)

• Stage 2: Construction (NEC3 ECC Main Option C)

In accordance with the framework allocation process as described in Schedule 7, the South Kensington Station Capacity Upgrade project was allocated to Costain.

The works will deliver an enlarged station with new platform, extended ticket hall, provision of step-free access from street to all platforms and improvements and modernisation to the station systems and staff welfare. The project will bring the new station infrastructure into operational use and realise the benefits of the wider South Kensington Station Upgrade investment, including increased station capacity.

LUL's initial commitment under the contract is limited to Stage 1. Progression to Stage 2 is optional and subject to completion of Stage 1, confirmation of affordability, receipt of the necessary approvals and satisfaction of the contractual conditions for progression. The price for Stage 2 has not yet been agreed and will be developed during Stage 1. The contract value stated in this notice therefore includes an estimate for the potential Stage 2 works and should not be interpreted as an agreed or committed Stage 2 price.

CPV: Construction work

The lotProcurement structure

single lot · no lot value published
Lot #1Lot 1Awarded 4 yrs 3 mo
Contract period: 31 Dec 2025 — 30 Mar 2030 (4 yrs 3 mo)
45000000 Construction work

Procedure terms & legal framework

From the official record
Procedure method
Award under framework
Legal basis
UKPGA · 2023/54 Procurement Act 2023
Procurement category
Works
Notice status
Awarded
Procurement threshold
Unspecified in notice
Regulatory regime
Utilities
Commercial structure
Call-off under a framework
Competition type
Direct award — no call for competition
GPA / WTO covered
Unspecified in notice
Recurring procurement
No (one-off requirement)
First published
23 Sept 2026, 11:19 BST
Last source update
23 Sept 2026, 11:19 BST
Authority reference
WS2436778117
Latest notice
Contract award notice (UK6)
Classification (CPV)
Construction work
Delivery area
London (UKI)
Official registry OCID
ocds-h6vhtk-051b55
Related procedures1

How it was run

Submission deadline

Timeline

4 published dates · Europe/London
  1. Planning notice published
    21 May 2025, 15:09 BST
  2. Next notice expected354 days ago
    5 Oct 2025, 23:59 BST
  3. Contract starts268 days ago
    31 Dec 2025, 00:00 GMT
  4. Latest notice published1 day ago
    23 Sept 2026, 11:19 BST

Commercial outcome & contract awards

Published awards, contracts and bid statistics — not a forecast
Awards 1
Awarded value £85,000,0001 award exc. VAT
Awarded toValueDateStatus
Costain Limited19 Oct 2026 — 18 Jun 2028 · up to 18 Apr 2035
Extensions: The initial commitment is for Stage 1, comprising detailed design. The contract includes an option for London Underground Limited (LUL) to instruct Stage 2, comprising construction and more…delivery, subject to satisfactory completion of Stage 1, confirmation of affordability, receipt of the necessary approvals and satisfaction of the contractual conditions for progression. LUL is not committed to proceed to Stage 2.
£85,000,00017 Sept 2026Awarded

Notice history

7 events · 3 releases on Find a Tender · since 21 May 2025
  1. Contract signature expected
    28 Sept 2026, 23:59 BSTscheduled
  2. Contract award notice published
    23 Sept 2026, 11:19 BSTUK6
  3. Status changed to complete
    23 Sept 2026, 11:19 BST
  4. Procurement method changed
    23 Sept 2026, 11:19 BST
  5. Buyer details updated
    23 Sept 2026, 11:19 BST
  6. Pipeline notice published
    4 Jun 2025, 10:15 BSTUK1
  7. Pipeline notice published
    21 May 2025, 15:09 BSTUK1

Contracting authority & participating public bodies

2 public bodies on the notice

London Underground Limited

Contracting authorityPublic undertaking GB-COH: 01900907 5 Endeavour Square, London, London, E20 1JN

Other public bodies

  • Transport for LondonProcuring entityPublic authority - central governmentLondon Underground Limited is a subsidiary of Transport for London. Transport for London has provided procurement services on London Underground Limited's behalfGB-PPON: PHMT-6197-NWNZ London, London

Bidders & participating suppliers

1 commercial party on the notice
  • COSTAIN LIMITEDAwarded supplierGB-COH: 00610201GB-PPON: PJBL-1593-VJTQ Seventh Floor, London, London, EC3A 8BE

Official documents & specifications (3)

Official links; attachments are not copied

Notices published for this procedure

  • Contract award notice awardContract award noticeUK6Contract award notice on Find a Tender
  • Pipeline notice planningPipeline noticeUK1Pipeline notice on Find a Tender
  • Pipeline notice planningPipeline noticeUK1Pipeline notice on Find a Tender