Combined facilities support activities (SIC code 81100)
Combined facilities support activities is UK SIC code 81100. It sits in division 81 (Services to buildings and landscape activities) of the SIC 2007 list. On the August 2026 Companies House register, 10,531 active UK companies list 81100 among their SIC codes. 6,688 of them list it first.
10,531active UK companies list SIC 81100 among their codes on the public recordCompanies House · counts as of August 2026
SIC 81100 in numbers
10,531 companies is 0.20 per cent of the 5,190,464 active companies on the UK register. 81100 is the 5th most used of the 8 codes we track in division 81.
6,688 put 81100 first and 3,843, 36 per cent, list it in one of their other three slots. First code only gives the tighter list; any position gives more of them.
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 18 per cent and the top five post towns hold 25 per cent, so the other 75 per cent sit across the rest of the country. A regional filter narrows the list without gutting it.
A worked example: 81100, registered office in London, incorporated in the last ninety days, from a pool of 10,531. 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 81100 companies, as leads
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This division is home to the cleaning and grounds trades. General building cleaning sits under 81210.
Related SIC codes
How to read SIC 81100
SIC 81100 reads as division 81 (services to buildings and landscape activities), group 811, class 8110, then the full five digits, inside section N, administrative and support service activities. A company picks its own codes, up to four, and Companies House does not check them, so 81100 is the company's own description of what it does, and 6,688 list it first where 10,531 list it anywhere.
Who sells into division 81
These are classic local service businesses, so the sellers are familiar ones. Insurance brokers offer public liability.
About SIC 81100
How many UK companies use SIC code 81100?
10,531 active UK companies list 81100 (Combined facilities support activities) among their registered SIC codes. Each company may register up to four. Of those, 6,688 put it first. The figures come from the August 2026 Companies House register snapshot, and count active companies only.
Which SIC code should a domestic cleaning company use?
Most domestic and general cleaners register 81210, general cleaning of buildings. Code 81299 covers services that fit no standard category. Code 81221 is specifically for window cleaning. There is no penalty for a wrong answer. Companies House runs no approval process, and you can refine your codes on any confirmation statement (CS01). Firms covering several trades often list two or three codes, up to the maximum of 4.
Find UK SIC 81100 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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