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Company directory

Civil engineering: limited companies and filing deadlines

22,337 active civil engineering contractors that file small or micro-entity accounts, with their Companies House and HMRC deadlines.

Civil engineering contractors in numbers

From the Companies House register and filed balance sheets, as of 1 Oct 2026. The longest-established is Trent Building Company,Limited(the), incorporated in 1908.

Companies
22,337
Active, small or micro accounts
New in the last 12 months
2,945
13% of the total
Typical net assets
£20K
Median of 16,406 latest balance sheets
Typical size
1 employee
Median average headcount
Accounts due in the next 3 months
5,397
Companies House deadlines

Still trading, by year incorporated

Active civil engineering contractors by year of incorporation01,0002,0003,0002017: 798 incorporated (still active)79820172018: 920 incorporated (still active)92020182019: 998 incorporated (still active)99820192020: 1,092 incorporated (still active)1,09220202021: 1,026 incorporated (still active)1,02620212022: 1,170 incorporated (still active)1,17020222023: 1,460 incorporated (still active)1,46020232024: 1,485 incorporated (still active)1,48520242025: 2,502 incorporated (still active)2,50220252026: 2,277 incorporated (still active)2,2772026
Active civil engineering contractors by year of incorporation01,0002,0003,0002017: 798 incorporated (still active)798'172018: 920 incorporated (still active)920'182019: 998 incorporated (still active)998'192020: 1,092 incorporated (still active)1,092'202021: 1,026 incorporated (still active)1,026'212022: 1,170 incorporated (still active)1,170'222023: 1,460 incorporated (still active)1,460'232024: 1,485 incorporated (still active)1,485'242025: 2,502 incorporated (still active)2,502'252026: 2,277 incorporated (still active)2,277'26

Companies still active today, by the year they were incorporated; 2026 is the year so far.

How civil engineering contractors file

Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.

Every company on these pages is an active private limited company that files small or micro-entity accounts. Each one has to deliver accounts to Companies House within 9 months of its year end, pay corporation tax 9 months and 1 day after it, and file a CT600 with HMRC within 12 months.

Civil engineering by town

Newly incorporated

The most recent civil engineering contractors to register. Their first accounts are due 21 months after incorporation.

Filing for your civil engineering company?

A.X.E.L Filing prepares your micro-entity accounts for Companies House and your CT600 for HMRC from one set of questions. £49 flat for both, no accountant, no subscription.

Start your filing

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