O2 (UK) BT subsidiaries: Esat Digifone in Ireland, Viag Interkom in Germany and Telfort Mobiel in the Netherlands. The rebranding was supported by a European advertising campaign, which began on 16 April 2002, across all four countries, at a cost of £130 million. The main launch campaign ran from 18 June and was developed by Vallance Carruthers Coleman Priest, working alongside brand consultancy Lambie-Nairn, creators of the "O2" brand identity. In March 2005, mmO2 restructured its shares and the company was relisted as O2 plc. On 30 November 2005, O2 agreed to a takeover by Telefónica, a Spanish telecommunications company, for £17.7
State Grid Corporation of China State Grid Corporation of China The State Grid Corporation of China (SGCC; ), commonly known as the State Grid, is the state-owned electric utility monopoly of China. It is the largest utility company in the world, and as of 2018, the world's second largest company overall by revenue. In 2016/17 it was reported as having 927,839 employees, 1.1 billion customers and revenue of 363.125 billion dollars. After the electricity "Plant-Grid Separation" reform in early 2002, the assets of State Electric Power Corporation (国家电力公司) were divided into the five "power generation groups" that retained the power plants and five regional subsidiaries