page_title: O2 (UK)
section_title: Naming rights
hierarchical_section_title: O2 (UK) / Marketing / Naming rights
caption_attribution_description: O2 Arena
context_page_description: Telefonica UK Limited, trading as O2 UK, is a telecommunications services provider in the United Kingdom, owned by Telefónica, headquartered in Slough, England. With 34 million customers as of February 2020, O2 is the second largest UK mobile network operator, after EE, and followed by Vodafone and Three.
  The company was formed in 1985 as Cellnet, at first a joint venture between BT Group and Securicor, later wholly owned by BT. Cellnet was the second mobile phone network to launch in the UK after Vodafone three years earlier. BT demerged its mobile division in 2002 as mmO2 plc, which introduced the "O2" brand for the businesses. In 2006 the company was purchased by Telefónica, who retained the O2 brand and the company's UK headquarters. Telefónica and Liberty Global reached an agreement in May 2020 to merge the company with Virgin Media.
context_section_description: O2 is the sponsor of The O2 in London.  Since its launch in 2007 the Millennium Dome has been transformed and rebranded by O2 into an entertainment venue. O2 customers can get Priority Tickets up to 48 hours before they are released to the general public. The O2 offers exclusive areas for O2 customers, including the blueroom bar and the O2 lounge. Once inside, O2 customers can change their experience of these areas by dictating the wallpaper designs and jukebox requests through text. O2 also contributed 'O2 angels', a team of people trained to greet and direct visitors. Other smaller touches include changing the lighting, carpets and seats in the arena to the colour blue.
  The O2 Arena was the site of the artistic gymnastics events and medal rounds in basketball for the 2012 Summer Olympics.
  In February 2017, in a continuation of its agreement with AEG, the developers of the site, O2 announced that it had renewed its naming rights for a further ten years.
caption: The O2 entrance
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