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Architect companies in London

4,367 architect companies have a registered office in London, and 603 of them were formed in 2025 or 2026. In their latest accounts, the typical one held £23,082 in cash and owed £19,118 at year end.

Companies House register, 1 September 2026, and accounts filed in the last twelve months. Compared with the official category “Architectural activities” (SIC 71111).

The numbers

Architect companies in London compared with the same category across the UK. Typical figures are medians.
MeasureLondonUK
Registered companies4,36718,189
Formed in 2025 or 2026603 (14%)11%
Being struck off or in liquidation186 (4.3%)5.5%
Typical cash at year end£23,0821,239 accounts£19,639
Typical amount owed at year end£19,1182,870 accounts£19,135
Typical number of employees12,901 accounts1

What this means if you’re starting one

You will be up against established operators

14% of the 4,367 architect companies in London were formed in 2025–26, against 28% of all companies in London. Nationally, that share of new companies is lower than 82% of UK industries.

Few new companies are entering, so your customers will compare you with businesses that have years of reviews and regulars.

You can start without much equipment

The typical architect company in London carries £2,552 of equipment and other fixed assets after depreciation, lower than 88% of UK industries.

Most of the cost of entry is time and running costs rather than kit, so a small test is cheap.

Most of these businesses are run by one or two people

The typical architect company in London reports 1 employee; the top quarter has 2 or more (2,901 filings).

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

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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.

Architect in other places

Other businesses in London

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