SIC code 66110 classifies businesses engaged in administration of financial markets. There are 1,237 active companies registered under this code in the UK, forming a substantial sector within the national economy. It falls under Section K (Financial and insurance 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 Administration of financial markets industry page.
With a 79% survival rate, this sector shows strong business longevity. Only 8 of 1,556 companies registered under this code have dissolved, well below the UK average. Companies in this sector average 8.4 years old, reflecting a balanced mix of established businesses and newer market participants. Growth has been exceptional recently: 49% of all active companies were formed since 2020, marking this as one of the fastest-expanding classifications. The 2010s contributed another 35%, meaning the vast majority of businesses are relatively new. Geographically, the sector is heavily concentrated: LONDON alone accounts for 32% of all active companies (401 firms). The top three locations — LONDON, MANCHESTER, BIRMINGHAM — represent 35% of the sector.
SIC code 66110 stands for "Administration of financial markets" under the UK Standard Industrial Classification (SIC 2007) system. It belongs to Section K — Financial and insurance 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 1,237 active companies registered under SIC code 66110 in the UK, out of 1,556 total registrations. This gives a survival rate of 79%, meaning 21% of companies registered under this code have since dissolved. These figures are based on Companies House data and updated regularly.
The top locations for administration of financial markets companies (SIC 66110) are: LONDON (401), MANCHESTER (21), BIRMINGHAM (16), BRISTOL (15), GLASGOW (15). Geographic concentration can reflect local economic conditions, industry clusters, or proximity to key markets and supply chains.
The sector is growing: 49% of currently active SIC 66110 companies were formed since 2020, and 35% during the 2010s. This sustained formation rate indicates ongoing demand for administration of financial markets services in the UK.
Companies classified under SIC 66110 have an average age of 8.4 years. This suggests a balanced sector with both established players and newer entrants. Notable companies include LONDON STOCK EXCHANGE PLC, TRADEWEB EUROPE LIMITED, UNION BANCAIRE PRIVÉE (UK) LIMITED.
Related SIC codes within the same division include: 66190 (Activities auxiliary to financial intermediation n.e.c.), 66220 (Activities of insurance agents and brokers), 66300 (Fund management activities), 66290 (Other activities auxiliary to insurance and pension funding). 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 66110 (Administration of financial markets) 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 1,237 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.