O2 was launched in the
in 1985 under the name Cellnet in a joint venture between
Securicor Cellular Radio, and British Telecommunications (BT). In
1999 BT purchased the share of the business that it didn’t
already own from Securicor for £3.15 billion (Securicor had
originally invested only £4 million in 1985).
purchase by BT the name of the company was change to BT Cellnet.
Following a £2 billion investment program by BT the company had
reached 6 million customers by 2000.
In 2001 it was
decided that BT Cellnet should demerge with BT. This happened
later that same year, then in 2002 the company was rebranded as