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
Calcutta State Transport Corporation low floor bus in India, has been launched from 30 July 2014. These buses have been manufactured by Ashok Leyland Calcutta State Transport Corporation Calcutta State Transport Corporation (CSTC) is a West Bengal state government undertaken transport corporation. Headquartered in Kolkata it was set up on 31 July 1948. It plies buses in Kolkata and the nearby districts of West Bengal with some long distance services. CSTC owns 11 depots in Kolkata and some more outside in the districts to station . Calcutta State Transport Corporation started its journey on 31 July 1948 as State Transport Services with an objective