UK SIC 2007 · 43210
UK electrical contractors, domestic and commercial installation, fit-outs, maintenance, EV charger installation, and renewable systems. The largest of the construction sub-trade SIC codes by company count.
Division 43 is the trades division, and one of the largest classifications on the UK register. Electricians register under 43210, plumbing and heating engineers under 43220, roofers under 43910, and plasterers, painters, glaziers, floorers and scaffolders each under their own code. Two broad codes swell the numbers further: 43999 for specialised activities not elsewhere classified and 43390 for other building completion and finishing, both catch-alls that absorb general trades and multi-skilled firms. Most companies are small, many being a single tradesperson who incorporated for contracting or tax reasons.
The trades are relentlessly prospected because their needs are predictable and recurring: public liability insurance, accountancy for CIS refunds and limited company compliance, van leasing, tool suppliers and merchants offering trade credit. Lead generation and website services target the no-website majority, since a tradesperson visible on the register but invisible on search is losing local work. New incorporations are the standout signal, usually marking the jump from sole trader to limited company when insurance, banking and bookkeeping all get chosen within weeks. Heating firms under 43220 also draw sellers of renewables kit, especially heat pump distributors.
Guide: Lead generation for UK construction firms and trades →ACTIVE COMPANIES BY REGISTERED-OFFICE POST TOWN · COMPANIES HOUSE REGISTER, JULY 2026
Yes, there's no specific UK SIC for EV charger installation. Most file under 43210 (electrical installation), with some additionally filing under 71129 (other engineering activities).
Skewed small, about 70% of UK electrical contractors are sole-director or 2-5 employee firms. The trade naturally fragments at small scale because most jobs don't require larger crews.
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