Source: https://tendernation.io/opportunities/01a13d02-670f-73ff-86e9-76f9a77f2c22/wp3370-drainage-works-cta-main-works closed GB open procedure Suitable for SMEs # WP3370-Drainage Works - CTA Main Works [Costain Limited (H7-Heathrow)](https://tendernation.io/buyers/costain-limited-h7-heathrow) Estimated value £500,000 to £1,000,000 Published 21 Oct 2025 Deadline Closed 27 Oct 2025 ## Who can bid - Buyer says suitable for SMEs The buyer ticked “suitable for SMEs” on the notice. Anyone can still bid. - Buyer says suitable for VCSEs The buyer ticked “suitable for voluntary, community and social enterprises” on the notice. - Open procedure Anyone can submit a full tender; there is no shortlisting stage. [More contracts for small businesses and VCSEs](https://tendernation.io/opportunities/for-small-businesses) ## About this tender 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 ## CPV classification Drainage works Source Contracts Finder (UK) [View official notice](https://www.contractsfinder.service.gov.uk/notice/44b98a2c-57dd-4323-876e-e1106e7a8c42) Never miss a tender like this again Get AI summaries, deadline alerts and a bid pipeline for tenders matched to your business. Free to start. [Track tenders free](https://tendernation.io/register) [Buyer profile Costain Limited (H7-Heathrow): past awards and live tenders](https://tendernation.io/buyers/costain-limited-h7-heathrow) [Sector More Construction work tenders](https://tendernation.io/sectors/construction-work) ## More tenders like this [Bannister Sports Centre Athletic Track Soft Market Testing Exercise · Harrow Council · 38 days left · 26 Nov 2026](https://tendernation.io/opportunities/01a1540d-d9e4-71cb-ad57-1603e9042fec/bannister-sports-centre-athletic-track-soft-market-testing-exercise) [Treloweth Community Hall Alterations and Extension Project · Carn Brea Parish Council · 49 days left · 7 Dec 2026](https://tendernation.io/opportunities/01a154e4-4991-71db-baac-ffae413f1c41/treloweth-community-hall-alterations-and-extension-project) [Norwich City Verges Mowing 2026 · Norse Eastern Ltd · 30 days left · 18 Nov 2026](https://tendernation.io/opportunities/01a15476-5fd9-70eb-b920-a66dc3e661e1/norwich-city-verges-mowing-2026) [Gwasanaethau Toeau - Gwaith cyfalaf wedi'i gynllunio ac atgyweiriadau ymatebol / Roofing Services - Planned capital works and responsive repairs · Denbighshire County Council · 28 days left · 16 Nov 2026](https://tendernation.io/opportunities/01a15476-6094-72b9-928b-5c887e7ceea4/gwasanaethau-toeau-gwaith-cyfalaf-wedii-gynllunio-ac-atgyweiriadau-ymatebol) [Repair of St Michaels and All Angels Church Wall · Aylsham Town Council · 31 days left · 19 Nov 2026](https://tendernation.io/opportunities/01a15476-6316-7235-8948-8f108b3da399/repair-of-st-michaels-and-all-angels-church-wall) [Building Minor Works · Derbyshire Support and Facilities Services Limited · 25 days left · 13 Nov 2026](https://tendernation.io/opportunities/01a15408-9087-7003-bd47-df7bc19d7ff7/building-minor-works)