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Electrician companies in the Belfast area

1,162 electrician companies have a registered office in the Belfast area (BT postcodes), and 251 of them were formed in 2025 or 2026. In their latest accounts, the typical one held £53,306 in cash and owed £45,839 at year end.

Companies House register, 1 September 2026, and accounts filed in the last twelve months. Compared with the official category “Electrical installation” (SIC 43210). Covers companies with a registered office in BT postcodes, including Belfast, Derry, Londonderry, Lisburn.

The numbers

Electrician companies in the Belfast area (BT postcodes) compared with the same category across the UK. Typical figures are medians.
MeasureBelfastUK
Registered companies1,16255,640
Formed in 2025 or 2026251 (22%)19%
Being struck off or in liquidation80 (6.9%)9.9%
Typical cash at year end£53,306257 accounts£19,688
Typical amount owed at year end£45,839657 accounts£24,180
Typical number of employees2704 accounts1

What this means if you’re starting one

Most of these businesses are run by one or two people

The typical electrician company in the Belfast area (BT postcodes) reports 2 employees; the top quarter has 4 or more (704 filings).

You are mostly up against owner-operators. Your own hours are likely to be your biggest cost, and the easiest one to undercount.

Planning a business like this in Belfast?

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What these figures can’t tell you

Companies are counted where their registered office is, which may be an accountant or a home address rather than a shop. Sole traders and partnerships are not on the register, and electronically filed accounts cover roughly 60–75% of accounts filed each year. The figures describe companies that exist; they cannot prove demand for your idea or predict whether it will work. How the figures are built.

Electrician in other places

Other businesses in Belfast

All business benchmarks in Belfast