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Tendarix
System operational · UK & EU tenders

Buyer profile

Costain Limited (H7-Heathrow)

privateLondonenglandGB

Total contracts

6

Known spend

£18m

6 disclosed

Average value

£3m

Per contract

Active suppliers

0

Last 5 years

Open0Awarded0Closed6

Top suppliers

Last 5 years

No award data captured yet for this buyer.

What they buy

By CPV category
  • Architectural & engineeringCPV 71

    3 contracts · £15m

  • Construction worksCPV 45

    3 contracts · £3m

Tender activity

Notices published per month — last 24 months

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All contracts (6)

C
e2e89ebe-cb92-4ba4-9e90-1788e7eaa3ad · Contract

WP6235 -T5D MEP Subcontractor

Costain Limited (H7-Heathrow)
servicesLondonSME friendly

Expression of Interest T5D MEP Subcontractor T5D Attenuator Overhaul (Survey / RIBA 4iii) Scope The T5D Rail-tunnel Ventilation Shaft is located adjacent to T5D at its North and ca

££2,500,000 — £5,000,000
9 Jun 2026
Posted · 1w agoView details →
C
30b4b20a-4bc7-4af3-a070-34305c20e5bb · Contract

WP1150 - Survey & Design - Tunnel Vent Vans & Fan Drives

Costain Limited (H7-Heathrow)
servicesLondonSME friendly

Expression of Interest Tunnel Vent, Fans and Fan Drives MEP Subcontractor Tunnel Vent, Fans and Fan Drives (Survey and RIBA 4) Scope The objective of this scope is to replace compo

££2,500,000 — £5,000,000
9 Jun 2026
Posted · 1w agoView details →
C
2a1ded63-c1d7-4984-9540-4dd819838020 · Contract

WP1140 - T5D Design Consultant

Costain Limited (H7-Heathrow)
servicesLondonSME friendly

The T5D Rail-tunnel Ventilation Shaft is located adjacent to T5D at its North and can be accessed from the bottom (Level 6) via the trackside of the HEX tunnel or from the top (lev

££2,500,000 — £5,000,000
9 Jun 2026
Posted · 1w agoView details →
C
75beab2a-6801-4dcd-a1bf-14d8fbe65645 · Contract

WP3380- Hard Landscaping (lot 1), Soft Landscaping (lot 2), & Kerb modifications (lot 3) and edge protection - CTA Main Works

Costain Limited (H7-Heathrow)
worksLondonSME friendly

Soft Landscaping There is a requirement for a subcontractor who can support us with our soft landscaping requirements. Removal of existing undergrowth on embankment side and replan

££500,000 — £1,000,000
1 Jun 2026
Posted · 7mo agoView details →
C
61dae3f5-1b2e-4825-ace7-a3f1bd2be1e5 · Contract

WP3380- Hard Landscaping (lot 1), Soft Landscaping (lot 2), & Kerb modifications (lot 3) and edge protection - CTA Main Works

Costain Limited (H7-Heathrow)
worksLondonSME friendly

This is a landscaping and infrastructure contract split into three separate packages (called 'lots'). The buyer needs a contractor to remove and replant vegetation on a steep slope (soft landscaping), lay a permeable tarmac surface for an evacuation area (hard landscaping), and modify road kerbs plus install edge protection and security fencing. The work involves hazardous conditions near live traffic, footpaths, and fire suppression systems.

££500,000 — £1,000,000
1 Jun 2026
Posted · 7mo agoView details →
C
9cd06afe-e5c3-4e19-9461-963e721ebc07 · Contract

WP4730 - Security Fencing CTA Tunnel

Costain Limited (H7-Heathrow)
worksLondonSME friendly

We have a security fencing requirement as part of our CTA tunnel main works 1100mm high key clamp rail - 30m + 30m 2400mm high green security mesh - 60m +26m 1200mm high green secu

££500,000 — £1,000,000
1 Jun 2026
Posted · 7mo agoView details →