Whito directory · Contractor
Costain
COSTAIN LIMITED, company number 00610201. Active, incorporated 25 August 1958. Checked at Companies House on 23 September 2026.
What they actually do
Civil engineering contractor. Companies House lists its business as construction of roads and motorways, bridges and tunnels, water projects and other civil engineering. On HS2 it is one of three firms in Skanska Costain STRABAG, which is building the London tunnels.
Named work
HS2 London tunnels, 21km from West Ruislip to Euston, as part of Skanska Costain STRABAG. Source: HS2 Ltd, 31 July 2026
Company record
| Legal name | COSTAIN LIMITED |
|---|---|
| Company number | 00610201 |
| Status | Active |
| Incorporated | 25 August 1958 |
| Registered office | Seventh Floor, 70 St Mary Axe, London EC3A 8BE |
| Group | Costain Group plc (01393773) |
| Whito group | Contractors |
| Regions | London (named work); other regions not yet recorded |
| Registers and licences | none linked |
| Checked at Companies House | 23 September 2026. No overdue filings shown. |
Limits. A Whito listing is not a recommendation, rating or prequalification. HS2’s page names the firm, not the legal entity inside the joint venture.
Every fact on this page was read on 23 September 2026 from the page linked or from the Companies House record for 00610201. Companies House shows what a company has filed. It says nothing about the quality of its work or its finances.
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This listing was compiled by Whito from public information, including the Companies House register and the pages linked above. It is not a recommendation or an endorsement. Always carry out your own checks before hiring.