SIC code 70100 covers activities of head offices activities in the UK, with 26,440 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 Activities of head offices industry page.
With a 93% survival rate, this sector shows strong business longevity. Only 78 of 28,567 companies registered under this code have dissolved, well below the UK average. The average company age is 19.6 years, indicating an established sector with a mix of long-running businesses and newer entrants. Company formation is spread across decades: 11% pre-1990, 10% in the 1990s, 28% in the 2000s, 34% in the 2010s, and 17% since 2020. The leading locations for this sector are LONDON (6,054), MANCHESTER (411), BIRMINGHAM (396), which together account for 26% of active companies.
SIC code 70100 stands for "Activities of head offices" 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 26,440 active companies registered under SIC code 70100 in the UK, out of 28,567 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 activities of head offices companies (SIC 70100) are: LONDON (6,054), MANCHESTER (411), BIRMINGHAM (396), GLASGOW (342), LEEDS (331). Geographic concentration can reflect local economic conditions, industry clusters, or proximity to key markets and supply chains.
Formation rates for SIC 70100 have been moderate: 17% of active companies formed since 2020, compared to 34% in the 2010s. The sector appears stable, with a balanced mix of established and newer businesses.
Companies classified under SIC 70100 have an average age of 19.6 years. This indicates a mature sector where businesses tend to operate long-term. Notable companies include SERCO LIMITED, KINGFISHER PLC, BALFOUR BEATTY PLC.
Related SIC codes within the same division include: 70229 (Management consultancy activities other than financial management), 70221 (Financial management), 70210 (Public relations and communications activities), 7011 (Development and selling of real estate). 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 70100 (Activities of head offices) 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 26,440 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.