O2 (UK) 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 Securicor's share of Cellnet and the company was later rebranded as BT Cellnet. In June 2000, BT Cellnet launched the world's
Communications and Information Technology Commission (Saudi Arabia) for hosting a firewall which blocks access to thousands of websites, mainly due to sexual and political content. Access to Megaupload has been intermittently blocked by the Internet authorities in Saudi Arabia. Censoring of many Arabic and English Wikipedia has also been repeatedly reported. Communications and Information Technology Commission (Saudi Arabia) Communications and Information Technology Commission (CITC) (, Hai'at al-Ittisalat wa Tiqniyyat al-Ma`lumat) is the Saudi communications authority. It was first established under the name of Saudi Communications Commission in accordance with the decision of the Council of Ministers. The name was changed after the Commission was assigned new tasks