SIC code 23140 covers manufacture of glass fibres businesses. With 116 active companies, this is a specialised niche within the UK business landscape. It falls under Section C (Manufacturing) 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 Manufacture of glass fibres industry page.
Companies in this sector average 11.4 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 25%, meaning the vast majority of businesses are relatively new.
SIC code 23140 stands for "Manufacture of glass fibres" under the UK Standard Industrial Classification (SIC 2007) system. It belongs to Section C — Manufacturing. 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 116 active companies registered under SIC code 23140 in the UK, out of 141 total registrations. This gives a survival rate of 82%, meaning 18% of companies registered under this code have since dissolved. These figures are based on Companies House data and updated regularly.
The sector is growing: 49% of currently active SIC 23140 companies were formed since 2020, and 25% during the 2010s. This sustained formation rate indicates ongoing demand for manufacture of glass fibres services in the UK.
Companies classified under SIC 23140 have an average age of 11.4 years. This suggests a balanced sector with both established players and newer entrants. Notable companies include KNAUF INSULATION LIMITED, NGF EUROPE LIMITED.
Related SIC codes within the same division include: 23700 (Cutting, shaping and finishing of stone), 23610 (Manufacture of concrete products for construction purposes), 23410 (Manufacture of ceramic household and ornamental articles), 23120 (Shaping and processing of flat glass). 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 23140 (Manufacture of glass fibres) 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 116 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.