Defence activities (SIC code 84220)
Defence activities is UK SIC code 84220. It sits in division 84 (Public administration and defence; compulsory social security) of the SIC 2007 list. On the August 2026 Companies House register, 941 active UK companies list 84220 among their SIC codes. 431 of them list it first.
941active UK companies list SIC 84220 among their codes on the public recordCompanies House · counts as of August 2026
SIC 84220 in numbers
941 companies is 0.02 per cent of the 5,190,464 active companies on the UK register. 84220 is the 6th most used of the 6 codes we track in division 84.
Only 431 of the 941 put it first. The other 510, 54 per cent, list it behind another code, so a search on the first code alone would miss most of them. Match any of the four positions and tighten it with a second 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 25 per cent and the top five post towns hold 32 per cent, so the other 68 per cent sit across the rest of the country. A regional filter narrows the list without gutting it.
A worked example: 84220, registered office in London, incorporated in the last ninety days, from a pool of 941. 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 84220 companies, as leads
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It is odd to find public administration and defence on the companies register at all. Most public bodies are not registered companies.
Related SIC codes
How to read SIC 84220
SIC 84220 reads as division 84 (public administration and defence; compulsory social security), group 842, class 8422, then the full five digits, inside section O, public administration and defence. A company picks its own codes, up to four, and Companies House does not check them, so 84220 is the company's own description of what it does, and 431 list it first where 941 list it anywhere.
Who sells into division 84
Selling into this division is niche, but not pointless. Fire safety consultancies and training providers under 84250 buy certification, equipment and e-learning platforms.
About SIC 84220
How many UK companies use SIC code 84220?
941 active UK companies list 84220 (Defence activities) among their registered SIC codes. Each company may register up to four. Of those, 431 put it first. The figures come from the August 2026 Companies House register snapshot, and count active companies only.
Why do private companies appear under public administration SIC codes?
SIC codes are self-selected and nobody gatekeeps them. Any director can pick a division 84 code at incorporation or on a confirmation statement (CS01). Some picks are deliberate, such as a fire risk assessment firm choosing 84250. Others are simple misreadings of the code description. Real government departments and most councils are not Companies House entities. So this division is mainly private and third-sector organisations.
Find UK SIC 84220 companies
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