SIC code 43390 (Other building completion and finishing) is one of the most widely used business classifications in the UK, with 35,920 active companies registered under this code. It falls under Section F (Construction) of the UK SIC 2007 classification system. The average company age is 8.4 years. The leading locations are BASILDON (229) and LEIGH-ON-SEA (125).
See the full industry analysis on the Other building completion and finishing industry page.
SIC code 43390 stands for "Other building completion and finishing" under the UK Standard Industrial Classification (SIC 2007) system. It belongs to Section F — Construction. Companies use this code when registering with Companies House to indicate their primary business activity.
There are currently 35,920 active companies registered under SIC code 43390 in the UK, out of 42,091 total registrations (including dissolved companies).
The top locations for companies classified under SIC 43390 are: BASILDON (229), LEIGH-ON-SEA (125), RUISLIP (108). These areas represent the highest concentration of other building completion and finishing businesses in the UK.
Search, filter, and analyse 35,920 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.