SIC code 61900 classifies businesses engaged in other telecommunications activities. There are 8,983 active companies registered under this code in the UK, forming a substantial sector within the national economy. It falls under Section J (Information and communication) 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 Other telecommunications activities industry page.
With a 85% survival rate, this sector shows strong business longevity. Only 35 of 10,564 companies registered under this code have dissolved, well below the UK average. Companies in this sector average 10.6 years old, reflecting a balanced mix of established businesses and newer market participants. The sector is experiencing strong growth, with 40% of active companies formed since 2020 and 34% during the 2010s. This sustained formation rate points to continued demand for other telecommunications activities services. The leading locations for this sector are LONDON (1,921), MANCHESTER (155), BIRMINGHAM (140), which together account for 25% of active companies.
SIC code 61900 stands for "Other telecommunications activities" under the UK Standard Industrial Classification (SIC 2007) system. It belongs to Section J — Information and communication. 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 8,983 active companies registered under SIC code 61900 in the UK, out of 10,564 total registrations. This gives a survival rate of 85%, meaning 15% of companies registered under this code have since dissolved. These figures are based on Companies House data and updated regularly.
The top locations for other telecommunications activities companies (SIC 61900) are: LONDON (1,921), MANCHESTER (155), BIRMINGHAM (140), LIVERPOOL (112), GLASGOW (109). Geographic concentration can reflect local economic conditions, industry clusters, or proximity to key markets and supply chains.
The sector is growing: 40% of currently active SIC 61900 companies were formed since 2020, and 34% during the 2010s. This sustained formation rate indicates ongoing demand for other telecommunications activities services in the UK.
Companies classified under SIC 61900 have an average age of 10.6 years. This suggests a balanced sector with both established players and newer entrants. Notable companies include COLT TECHNOLOGY SERVICES, BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY, SPIRENT COMMUNICATIONS PLC.
Related SIC codes within the same division include: 61100 (Wired telecommunications activities), 61200 (Wireless telecommunications activities), 61300 (Satellite telecommunications activities), 6110 (Sea and coastal water transport). 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 61900 (Other telecommunications 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 8,983 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.