SIC code 71111 covers architectural activities activities in the UK, with 17,529 active companies currently registered. This represents a significant segment of UK business activity. It falls under Section M (Professional, scientific and technical activities) of the UK SIC 2007 classification system, which is used by Companies House to categorise all registered businesses.
See the full industry analysis on the Architectural activities industry page.
With a 93% survival rate, this sector shows strong business longevity. Only 11 of 18,891 companies registered under this code have dissolved, well below the UK average. Companies in this sector average 10.8 years old, reflecting a balanced mix of established businesses and newer market participants. The sector is experiencing strong growth, with 36% of active companies formed since 2020 and 40% during the 2010s. This sustained formation rate points to continued demand for architectural activities services. The leading locations for this sector are LONDON (4,033), MANCHESTER (236), GLASGOW (230), which together account for 26% of active companies.
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. The code is required for annual confirmation statements and is used by HMRC, ONS, and other government bodies for statistical and regulatory purposes.
There are currently 17,529 active companies registered under SIC code 71111 in the UK, out of 18,891 total registrations. This gives a survival rate of 93%, meaning 7% of companies registered under this code have since dissolved. These figures are based on Companies House data and updated regularly.
The top locations for architectural activities companies (SIC 71111) are: LONDON (4,033), MANCHESTER (236), GLASGOW (230), BRISTOL (198), BIRMINGHAM (175). Geographic concentration can reflect local economic conditions, industry clusters, or proximity to key markets and supply chains.
The sector is growing: 36% of currently active SIC 71111 companies were formed since 2020, and 40% during the 2010s. This sustained formation rate indicates ongoing demand for architectural activities services in the UK.
Companies classified under SIC 71111 have an average age of 10.8 years. This suggests a balanced sector with both established players and newer entrants. Notable companies include BUILDING DESIGN PARTNERSHIP LIMITED, ALLFORD HALL MONAGHAN MORRIS LIMITED, HAWKINS BROWN ARCHITECTURE LIMITED.
Related SIC codes within the same division include: 71129 (Other engineering activities), 71122 (Engineering related scientific and technical consulting activities), 71121 (Engineering design activities for industrial process and production), 71200 (Technical testing and analysis). Companies may use multiple SIC codes if they operate across several of these related activities. When registering with Companies House, businesses should select the code that best represents their primary activity.
You can search for companies with SIC code 71111 (Architectural activities) using UVAGATRON's company explorer, which allows filtering by SIC code, location, and company status. Alternatively, Companies House offers a basic search on their website. Our platform adds risk intelligence, director networks, and signals from 50+ government databases to each company record.
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: 2026-04-17.