O2 (UK) they can do it too" in reference to Vodafone and EE, O2's biggest competitors and the UK's top three mobile-telecoms companies. O2 (UK) Telefónica UK Limited (trading as O2 – stylised as O) is a telecommunications services provider in the United Kingdom, owned by the Spanish multinational Telefónica, and is headquartered in Slough. With 25 million subscribers (as of December 2017), O2 is the second-largest mobile network operator in the United Kingdom after EE, with Vodafone in third place. O2 was formed in 1985 as Cellnet, a 60:40 joint venture between BT Group and Securicor. In 1999, BT Group acquired
The O2 screen-size, in London, and the sixth largest screen in the UK. It uses the vista ticketing system, where tickets can be purchased from any stall selling refreshments. Cineworld began operating the cinema, taking over from Vue in 2010. Fast food outlets have been banned from the development as the theme is 'aspirational but accessible', trying to avoid it being seen as a shopping centre but more like Covent Garden. Announced in 2011, Up at The O2 officially opened on 21 June 2012. It involves an expedition across the roof of The O2 along a 190m long tensile fabric walkway. Halfway,