Company directory · Southampton
Trade and construction companies in Southampton
3,687 active trade and construction companies registered in Southampton, Hampshire, by trade.
Trade companies in Southampton in numbers
From the Companies House register and filed balance sheets, as of 1 Oct 2026. The longest-established is Bitterne Hardcourts Limited, incorporated in 1933.
Still trading, by year incorporated
Companies still active today, by the year they were incorporated; 2026 is the year so far.
Trades in Southampton
- Builders491
- Property developers399
- Electricians342
- Mechanics and garages282
- Cleaning companies274
- Plumbers and heating engineers246
- Motor traders239
- Machinery repair and installation224
- Specialist contractors202
- Finishing trades181
- Installers132
- Civil engineering114
- Landscapers and gardeners96
- Joiners and carpenters85
- Painters and decorators82
- Roofers82
- Floor and wall tilers44
- Scaffolders44
- Glaziers32
- Plasterers32
- Repair services27
- Facilities management21
- Groundworks and demolition16
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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