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  1. Companies
  2. Plumbers and heating engineers

Company directory

Plumbers and heating engineers: limited companies and filing deadlines

39,864 active plumbing and heating companies that file small or micro-entity accounts, with their Companies House and HMRC deadlines.

Plumbing and heating companies in numbers

From the Companies House register and filed balance sheets, as of 1 Oct 2026. The longest-established is Porchester Hotel Limited, incorporated in 1924.

Companies
39,864
Active, small or micro accounts
New in the last 12 months
5,842
15% of the total
Typical net assets
£9,347
Median of 29,183 latest balance sheets
Typical size
1 employee
Median average headcount
Accounts due in the next 3 months
9,928
Companies House deadlines

Still trading, by year incorporated

Active plumbing and heating companies by year of incorporation02,0004,0006,0002017: 1,521 incorporated (still active)1,52120172018: 1,743 incorporated (still active)1,74320182019: 1,940 incorporated (still active)1,94020192020: 1,907 incorporated (still active)1,90720202021: 2,409 incorporated (still active)2,40920212022: 2,473 incorporated (still active)2,47320222023: 2,763 incorporated (still active)2,76320232024: 2,931 incorporated (still active)2,93120242025: 4,304 incorporated (still active)4,30420252026: 4,697 incorporated (still active)4,6972026
Active plumbing and heating companies by year of incorporation02,0004,0006,0002017: 1,521 incorporated (still active)1,521'172018: 1,743 incorporated (still active)1,743'182019: 1,940 incorporated (still active)1,940'192020: 1,907 incorporated (still active)1,907'202021: 2,409 incorporated (still active)2,409'212022: 2,473 incorporated (still active)2,473'222023: 2,763 incorporated (still active)2,763'232024: 2,931 incorporated (still active)2,931'242025: 4,304 incorporated (still active)4,304'252026: 4,697 incorporated (still active)4,697'26

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

How plumbing and heating companies file

Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.

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.

Plumbers and heating engineers by town

Newly incorporated

The most recent plumbing and heating companies to register. Their first accounts are due 21 months after incorporation.

Filing for your plumbers and heating engineer 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

Other trades: Builders · Property developers · Civil engineering · Groundworks and demolition · Electricians · Installers · Plasterers · Joiners and carpenters · Floor and wall tilers · Painters and decorators · Glaziers · Finishing trades · Roofers · Scaffolders · Specialist contractors · Landscapers and gardeners · Cleaning companies · Facilities management · Mechanics and garages · Motor traders · Machinery repair and installation · Repair services

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