O2 (UK) cent share of Cellnet for £3.15 billion. Cellnet had five million customers at the time of its acquisition. The company was later rebranded as BT Cellnet , and it became a part of BT Wireless, a group of companies owned by BT. BT announced on 3 September 2001 that the BT Wireless business would be spun off from the main group as a newly listed holding company, mmO2 plc, operating under the "O2" brand. Shareholders approved the plan at an extraordinary general meeting on 23 October 2001. BT Cellnet relaunched as "O2" on 18 June 2002, along with other former
O2 (UK) 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. Since 2008, O2 is partnered with Live Nation and the Academy Music Group, allowing O2 to rename the music venues. The partnership allows O2 to offer customers priority