O2 (UK)

This article is about the British mobile network operator. For the related brand owned by Telefónica, see O2 (brand).

Telefonica UK Limited
  • O2 (2002–present)
  • BT Cellnet (1999–2002)
  • Cellnet (1985–1999)
Formerly
  • Telecom Securicor Cellular Radio Limited (1985–1999)
  • BT Cellnet Limited (1999–2002)
  • O2 (UK) Limited (2002–2008)
  • Telefónica O2 UK Limited (2008–2011)
  • Telefonica O2 UK Limited (2011)[1]
Company typeSubsidiary
IndustryTelecommunications
Founded1985; 39 years ago (1985) (as Cellnet)
FounderJohn Carrington
HeadquartersReading, England
Area served
United Kingdom
Key people
Lutz Schüler (CEO)
RevenueIncrease £6.510 billion (2017)[2]
ParentVirgin Media O2
Subsidiaries
Websiteo2.co.uk Edit this at Wikidata

Telefonica UK Limited, trading as O2 (stylised as O2), is a British telecommunications services provider, headquartered in Reading, England which operates under the O2 brand.[3] It is owned by VMED O2 UK Limited, a 50:50 joint venture between Telefónica and Liberty Global. O2 is the UK's largest mobile network operator, with 23.8 million subscribers as of July 2024.[4]

  1. ^ "Telefonica UK Limited – Overview (Free company information from Companies House)".
  2. ^ "Telefónica 2017 Integrated Annual Report, Key Figures". Telefónica. 2017.
  3. ^ Contact us, O₂ corporate website. Retrieved: 6 December 2012.
  4. ^ "2024 Quarterly Results – Virgin Media O2" (PDF). Virgin Media O2. 26 July 2024.