SIC code 81210 (General cleaning of buildings) is one of the most widely used business classifications in the UK, with 17,559 active companies registered under this code. It falls under Section N (Administrative and support service activities) of the UK SIC 2007 classification system. Active companies average just 4.3 years old, suggesting rapid growth and recent market entry.
See the full industry analysis on the General cleaning of buildings industry page.
SIC code 81210 stands for "General cleaning of buildings" under the UK Standard Industrial Classification (SIC 2007) system. It belongs to Section N — Administrative and support service activities. Companies use this code when registering with Companies House to indicate their primary business activity.
There are currently 17,559 active companies registered under SIC code 81210 in the UK, out of 20,541 total registrations (including dissolved companies).
Search, filter, and analyse 17,559 companies classified under this SIC code with AI-powered risk intelligence.
Data sourced from Companies House, HM Land Registry, FCA Register, and 50+ government databases. SIC classification follows the UK Standard Industrial Classification of Economic Activities 2007 (SIC 2007). Last updated: 2026-04-05.