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Costain Group PLC
We are Costain. We improve people’s lives by creating connected, sustainable infrastructure that enables people and the planet to thrive. The company’s own description of itself, taken from its website.
Active 47 years old · 615th oldest of 4,506 · incorporated in the 1970s
Registered office
SEVENTH FLOOR, 70 ST MARY AXE, LONDON, EC3A 8BE
Other PLCs registered in London
Online
Website www.costain.com
News and announcements on their own site
Found by searching for the company name and kept only where the domain matches it. Social accounts are listed only where the company links to them from its own site. Nothing here is supplied by the company to us.
Filing history
This company has 838 documents on its Companies House record. The most recent accounts were filed on 31/05/2026. Its last confirmation statement or annual return was filed on 23/02/2026.
The most recent filings
This is the list of documents filed, not their contents. A line saying accounts were filed records that they were filed and when; it says nothing about turnover, profit or assets, which are inside the documents themselves and are not published here. Read the filings on the Companies House record.
Who runs it
The register lists 8 current officers and 68 who have resigned.
Who controls it
The register shows no current person or entity with significant control for this company.
Charges
A charge is security a company gives a lender over its assets. This company has 3 registered charges, of which 1 are not yet recorded as satisfied.
Lloyds Tsb Bank PLC Outstanding, created 12/09/2012
National Westminster Bank PLC Fully satisfied, created 14/03/1997
National Westminster Bank PLC Fully satisfied, created 12/07/1996
Officers, controllers and charges are as recorded on the Companies House register on 13/10/2026, and the register changes daily. Appearing here is not an allegation about anyone. Read the current record on the Companies House record.
What it does
- 42110 - Construction of roads and motorways
- 70100 - Activities of head offices
- 71129 - Other engineering activities
This page is compiled from the public register. Companies House does not verify the information filed with it, so treat everything here as what the company reported rather than as established fact. For filings, officers and charges, see the official Companies House record.
Registered office
No other PLC on the register gives this postcode.
On the register
- 615th oldest of 4,506 PLCs
- One of the 1970s cohort
- Not in liquidation or facing strike off
There are 4,506 PLCs in Britain, under a tenth of one per cent of the register. The whole count.