Closed tender

WP3370-Drainage Works - CTA Main Works

Details

Buyer: Costain Limited (H7-Heathrow)
Value: £750,000
Topic: Drainage construction works
Published: 21 October 2025
Submission: 27 October 2025
Source: uk:contracts_finder

Tender description

Drainage Overview: Repairs to the existing drainage in the immediate area outside the tunnel portals. Mostly patch repairs with Cured In Place liner. Some elements of robotic cutter required. Element of regrading required to side bore surface to address ponding issue Interfaces: None beyond standard tunnel working Constraints: Works in carriageway during bore closure only Quantities: CIP Liner: 4no. Robotic Cutter to Remove

Timeline

Completed: Tender published21 October 2025
Current notice
Completed: Submission date27 October 2025

About the buyer

Costain Limited buys subcontract packages for its Heathrow H7 renewals work, from its base in Maidenhead. Subcontractors go through Costain Supplier Onboarding and due diligence checks before any award. Bids are scored on a Value Scorecard that covers technical capability, health and safety, quality and price. Some airside packages ask bidders to hold a Heathrow Airside Operations Licence. Packages cover the Central Terminal Area tunnel, with design, survey and construction work all tendered separately.

Over the past 5 years, most of Costain Limited's contract awards have been in construction work and architectural and engineering services.

Decision makers

Connect with the people behind this procurement.

Job title	Phone number	Work email
Head of Procurement	+44 •••• ••••••	••••••••@costain-limited-h7-heathrow.gov
Commercial Director	+44 •••• ••••••	••••••••@costain-limited-h7-heathrow.gov
Procurement Manager	+44 •••• ••••••	••••••••@costain-limited-h7-heathrow.gov
Category Lead	+44 •••• ••••••	••••••••@costain-limited-h7-heathrow.gov
Senior Buyer	+44 •••• ••••••	••••••••@costain-limited-h7-heathrow.gov
Contracts Manager	+44 •••• ••••••	••••••••@costain-limited-h7-heathrow.gov