O2 (UK) BT subsidiaries: Esat Digifone in Ireland, Viag Interkom in Germany and Telfort Mobiel in the Netherlands. The rebranding was supported by a European advertising campaign, which began on 16 April 2002, across all four countries, at a cost of £130 million. The main launch campaign ran from 18 June and was developed by Vallance Carruthers Coleman Priest, working alongside brand consultancy Lambie-Nairn, creators of the "O2" brand identity. In March 2005, mmO2 restructured its shares and the company was relisted as O2 plc. On 30 November 2005, O2 agreed to a takeover by Telefónica, a Spanish telecommunications company, for £17.7
O2 Money to recognise "customer service, excellence and innovation" in the UK and Irish payment industry, O2 won the Best New Prepaid Card Product of the Year and Best Prepaid Card Marketing Campaign of the Year awards, receiving judges were particularly impressed with the concept of the card. O2 Money was critically praised at the event, particularly in regard to the high profile, customer-centric campaign used to promote the service for "[blowing] away the cobwebs surrounding payment cards and [lifting] the stigma of prepaid as a product for low-income consumers." Additionally, the judges at the event were thankful to O2 for helping