SIC code 9999 classifies dormant company, no significant accounting transactions businesses. There are 66 active companies registered under this code in the UK. It falls under Section X (Special codes) of the UK SIC 2007 classification system. With an average company age of 73.0 years, this is a well-established sector with mature businesses.
SIC code 9999 stands for "Dormant company, no significant accounting transactions" under the UK Standard Industrial Classification (SIC 2007) system. It belongs to Section X — Special codes. Companies use this code when registering with Companies House to indicate their primary business activity.
There are currently 66 active companies registered under SIC code 9999 in the UK, out of 253 total registrations (including dissolved companies).
Search, filter, and analyse 66 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.