VMED O2 UK Limited,[1] trading as Virgin Media O2, is a British mass media and telecommunications company based in Reading, Berkshire, England. The company was formed in June 2021 as a 50–50 joint venture between Liberty Global and Telefónica through the merger of their respective Virgin Media and O2 UK businesses, after approval by the Competition and Markets Authority.[2][3]
O2 UK is the largest mobile network in the United Kingdom by customer base, providing 5G, 4G, 3G (until late 2025), and 2G services, and Virgin Media is the main cable provider in the UK, providing cable (HFC) and fibre-to-the-premises broadband, cable television (Virgin TV