SIC code 71111 (Architectural activities) is one of the most widely used business classifications in the UK, with 17,529 active companies registered under this code. It falls under Section M (Professional, scientific and technical activities) of the UK SIC 2007 classification system. The average company age is 10.7 years.
See the full industry analysis on the Architectural activities industry page.
SIC code 71111 stands for "Architectural activities" under the UK Standard Industrial Classification (SIC 2007) system. It belongs to Section M — Professional, scientific and technical activities. Companies use this code when registering with Companies House to indicate their primary business activity.
There are currently 17,529 active companies registered under SIC code 71111 in the UK, out of 18,891 total registrations (including dissolved companies).
Search, filter, and analyse 17,529 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.