O2 (UK) first commercial General Packet Radio Service. BT Cellnet, together with BT Group's mobile telecommunications businesses in Germany, Ireland and the Netherlands, was part of the BT Wireless division. This was spun off from the BT Group in 2002 to form a new holding company, mmO2 plc, which introduced the new "O2" brand for the businesses. In 2005, mmO2 plc was renamed O2 plc. O2 plc was purchased by the Spanish telecommunications company Telefónica in 2006 for £18 billion. Under the terms of the acquisition, Telefónica agreed to retain the "O2" brand and the company's UK headquarters. O2 plc became Telefónica
The O2 Arena The O2 Arena The O2 Arena is a multi-purpose indoor arena located in the centre of The O2 entertainment complex on the Greenwich Peninsula in south east London. The arena was built under the former Millennium Dome, a large dome shaped building built to house an exhibition celebrating the turn of the third millennium; as the dome shaped structure still stands over the arena, "The Dome" remains a name in common usage for the venue. The arena, as well as the total O2 complex, is named after its primary sponsor, the telecommunications company O. The O2 Arena has the second