SIC code 81100 covers combined facilities support activities activities in the UK, with 6,603 active companies currently registered. It falls under Section N (Administrative and support service activities) of the UK SIC 2007 classification system. The average company age is 12.5 years.
SIC code 81100 stands for "Combined facilities support activities" 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 6,603 active companies registered under SIC code 81100 in the UK, out of 7,395 total registrations (including dissolved companies).
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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.