SIC code 99999 (Dormant Company) is one of the most widely used business classifications in the UK, with 107,626 active companies registered under this code. It falls under Section U (Activities of extraterritorial organisations) of the UK SIC 2007 classification system. The average company age is 13.5 years. The leading locations are MANCHESTER (3,209) and KENILWORTH (2,044).
See the full industry analysis on the Dormant Company industry page.
SIC code 99999 stands for "Dormant Company" under the UK Standard Industrial Classification (SIC 2007) system. It belongs to Section U — Activities of extraterritorial organisations. Companies use this code when registering with Companies House to indicate their primary business activity.
There are currently 107,626 active companies registered under SIC code 99999 in the UK, out of 121,318 total registrations (including dissolved companies).
The top locations for companies classified under SIC 99999 are: MANCHESTER (3,209), KENILWORTH (2,044), BRISTOL (1,596). These areas represent the highest concentration of dormant company businesses in the UK.
Search, filter, and analyse 107,626 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.