The following offers a review of some of O2's key business highlights since demerger from BT in November 2001.
29 December 2005: Tesco Mobile announced one million pre-pay customers.
11 November 2005: Firelink, the procuring body for the national communications contract, confirmed that O2 Airwave has been successful in the bid to equip all fire and rescue services across England with a new resilient and secure voice and data communications service.
26 September 2005: O2 announces UK launch of i-mode®.
22 September 2005: Mobile TV trial goes live in Oxford, UK.
19 July 2005: O2 Airwave announces that it has been successful in its bid to provide a communications service to all Ambulance Trusts in England.
25 May 2005: O2 and Anschutz Entertainment Group unveil 'The O2' and sign exclusive mobile content and music deal.
14 April 2005: O2 becomes the first UK-based mobile operator to gain ISO 14001 environmental certification group-wide.
1 April 2005: O2 Airwave completes its network roll-out to provide every police force in England, Scotland and Wales with state of the art, secure digital communications.
14 March 2005: O2 plc lists on London Stock Exchange following corporate reorganisation.
12 January 2005: Corporate reorganisation to create distributable reserves announced.
Discover the history of the mobile industry and go as far back as the 1800's with this interactive timeline.