Company directory · Watford
Trade and construction companies in Watford
2,015 active trade and construction companies registered in Watford, Hertfordshire, by trade.
Trade companies in Watford in numbers
From the Companies House register and filed balance sheets, as of 1 Oct 2026. The longest-established is Watford Refrigeration and Air Conditioning Limited, incorporated in 1948.
Still trading, by year incorporated
Companies still active today, by the year they were incorporated; 2026 is the year so far.
Trades in Watford
- Builders365
- Property developers277
- Motor traders161
- Specialist contractors150
- Electricians141
- Finishing trades135
- Plumbers and heating engineers124
- Cleaning companies118
- Mechanics and garages103
- Installers80
- Civil engineering77
- Machinery repair and installation47
- Roofers33
- Joiners and carpenters30
- Floor and wall tilers29
- Landscapers and gardeners25
- Painters and decorators23
- Plasterers21
- Facilities management19
- Repair services17
- Glaziers15
- Groundworks and demolition14
- Scaffolders11
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.
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