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
BATM Advanced Communications BATM Advanced Communications BATM Advanced Communications Ltd. (Baras Advanced Technologies Marom) is a technology company principally engaged in development, production and marketing of data and telecommunication products in the field of local and wide area networks, as well as the development, production and distribution of laboratory diagnostic equipment in the medical sector. The company is listed on the London Stock Exchange and is a constituent of the FTSE techMARK 100 Index. BATM Advanced Communications was founded in 1992 by Dr. Zvi Marom and Greshon Baras as a bootstrap that grew into a multinational technology corporation; Initially focusing on developing high-performance