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
Communications in Uganda Uganda took over control of its postal system, although until 1961 stamps from the colonial postal system were being issued alongside Uganda's stamps. The Uganda Posts and Telecommunications Corporation had a monopoly over Uganda's communications sector until the Uganda Communications Act was enacted in 1997. The act created the Uganda Communications Commission, the current regulator of communications in Uganda. As of June 2018, the telephone communications system was described by the CIA factbook as "developed through private partnerships", with "over of fiber optics", and 4G network available in most major cities and national parks, and 3G service available in second-tier