Public limited company registered in London, classed under “Construction of roads and motorways” and 2 other activities.
Headline figures
FY to Dec 2025 · Group consolidated
Turnover
For subscribers
Profit after tax
£37.3m
Net assets
For subscribers
Cash
For subscribers
Employees
For subscribers
Retained reserves
For subscribers
What the numbers say
3 findings from the figures, in plain English
Written by rules from the figures on this page. Not a forecast or a credit opinion.
History
| £ | 2023 | 2024 | 2025 |
|---|---|---|---|
| Profit after tax | £37.3m | ||
| Turnover | |||
| Net assets | |||
| Cash | |||
| Employees | |||
| Retained reserves |
Every figure for all 3 years
“—” means we did not find the figure in a source; it is never filled with an estimate.
Balance sheet and ratios
From the filed balance sheets · £
| Balance sheet | 2023 | 2024 | 2025 |
|---|---|---|---|
| Current assets | |||
| of which cash | |||
| Creditors due within a year | |||
| Creditors due after a year | |||
| Net assets | |||
| Ratios | |||
| Profit marginProfit after tax as a share of turnover | |||
| Return on equityProfit after tax as a share of net assets | |||
| Current ratioCurrent assets for every £1 owed within a year | |||
| Cash ratioCash for every £1 owed within a year | |||
5 balance-sheet lines and 4 ratios, every year
A ratio appears only for years where every line it needs was filed. Lines are as tagged in the accounts; nothing is added up or estimated.
Timeline
Checked 2026-10-18
- SharesCancellation of shares. Statement of capital on 15 September 2026 · GBP 2,627,463.46 (and 42 more like it since 4 August 2025)
- SharesPurchase of own shares (and 42 more like it since 4 August 2025)
- FilingResolutions (and 1 more like it since 2 June 2025)
- AccountsGroup of companies' accounts made up to 31 December 2025
- SharesStatement of capital following an allotment of shares on 26 May 2026 · GBP 2,673,544.22 (and 3 more like it since 2 June 2025)
- FilingClarification hmrc confirmation received that appropriate stamp duty has been paid on this transaction.
- DirectorsDirector's details changed for Ms Amanda Lucia Fisher on 1 September 2025
- DirectorsDirector's details changed for Ms Amanda Lucia Fisher on 22 July 2025
- DirectorsDirector's details changed for Ms Fiona Margaret Macaulay on 22 July 2025
- AccountsGroup of companies' accounts made up to 31 December 2024
- DirectorsDirector's details changed for Mr Steven Lewis Mogford on 5 August 2024
From the Companies House filing history. Routine confirmation statements are left out, and a run of the same filing is shown once.
Questions people ask
›What does Costain Group do?
Public limited company registered in London, classed under “Construction of roads and motorways” and 2 other activities.
›How much turnover does Costain Group make?
Answered in the full report
›Is Costain Group profitable?
Yes: it made a profit after tax of £37.3m in the year to 31 December 2025, its latest filed accounts.
›Who runs and owns Costain Group?
Its directors are Nicole Ann Geoghegan, Fiona Margaret Barkham, Amanda Lucia Fisher, Steven Lewis Mogford, Anthony James Quinlan and 3 more. Its owners are shown to subscribers.
›Where is Costain Group based?
Its registered office is Seventh Floor, 70 St Mary Axe, London, EC3A 8BE, in London.
›When was Costain Group founded?
Costain Group PLC was incorporated on 12 October 1978.
›Is Costain Group still trading?
The register lists Costain Group PLC as active.
