Electrical installation (SIC code 43210)
Electrical contractors across the UK file here. The code takes in home and commercial installs, fit-outs, maintenance, EV charger work, and renewable systems. Of all the construction sub-trade codes, this one holds the most companies.
55,997active UK companies list SIC 43210 among their codes on the public recordCompanies House · counts as of August 2026
SIC 43210 in numbers
55,997 companies is 1.1 per cent of the 5,190,464 active companies on the UK register. 43210 is the second most used of the 15 codes we track in division 43.
50,189 of the 55,997 put 43210 first, and only 5,808 carry it as a second, third or fourth code. The code on its own is a clean filter.
ACTIVE COMPANIES BY REGISTERED-OFFICE POST TOWN (WHERE THE PAPERWORK SITS, NOT NECESSARILY THE WORK) · COMPANIES HOUSE PUBLIC RECORD, AUGUST 2026
London is the largest cluster at 9 per cent and the top five post towns hold 14 per cent, so the other 86 per cent sit across the rest of the country. A regional filter narrows the list without gutting it.
A worked example: 43210, registered office in London, incorporated in the last ninety days, from a pool of 55,997. Each lead you get arrives with a working website and a real email, and the director's name when the record has one. If we cannot complete one, you pay nothing.
SIC 43210 companies, as leads
Live rows from the enriched public record. Email addresses are withheld until you sign up. Phone numbers come with paid plans.
Electricians in one town or city
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This is the trades division, and one of the biggest classifications on the UK register.
Related SIC codes
How to read SIC 43210
SIC 43210 reads as division 43 (specialised construction activities), group 432, class 4321, then the full five digits, inside section F, construction. A company picks its own codes, up to four, and Companies House does not check them, so 43210 is the company's own description of what it does, and 50,189 list it first where 55,997 list it anywhere.
Who sells into division 43
Lots of firms sell to the trades, because their needs are predictable and repeat every year. They buy public liability insurance, accountancy for CIS refunds and company compliance, van leasing, tools and trade credit from merchants.
About SIC 43210
Are EV charger installers filed under SIC 43210?
Yes. The UK has no separate SIC for EV charger work. Most installers file 43210 (electrical installation). Some add 71129 (other engineering activities) on top.
How big is the typical SIC 43210 company?
Small. Most jobs do not need a bigger crew, so the trade stays split into small units.
Find UK SIC 43210 companies
Filter Companies House by this code. Each lead arrives with a working website and a real email, or you pay nothing. 100 free leads, no card.
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