Electricians

Thirty-three electrical contractors — eight NICEIC-approved, five Electric Living installers, with a nine-firm renewables cluster.

Eight installers — five CCTV-led, one smart-home integrator, one aerials-and-security crossover, one fire-and-security house.

Eight installers — three pure-play renewables specialists among five electrical contractors running PV as a named service line.

Six firms — two in passive fire protection, two in alarm and detection systems, one sprinkler specialist, one multi-trade.

Six installers — four in St Peter Port, one in Castel, one in St Sampson. Two hold CAI membership; two are limited companies.

Four of Guernsey's 58 electricians install EV chargers — a wholesaler, a renewables installer, a contractor, a public-network operator.

Three firms specialise in structured data cabling — one via satellite AV, one via smart-home integration, one via mains electrical.

Three firms — one lighting wholesaler in St Peter Port (1981) and two NICEIC contractors folding lighting into wider electrical work.