O2 (UK)

Not to be confused with O2 plc.

1985–1990	1985–1988	1988–1990	1990–1999	1999–2002	2002–present

Cellnet

1985–1990

SVG NEEDED

1985–1988

SVG NEEDED

1988–1990

SVG NEEDED

1990–1999

SVG NEEDED

BT Cellnet

1999–2002

In 1999, BT Group acquired Securicor's 40 percent share of Cellnet and the company was later rebranded as BT Cellnet.

O₂

2002–present

Designer:  Lambie-Nairn

Typography:  Frutiger

Launched:  Unknown

In 2001, BT Wireless demerged from BT and took the name mmO₂ plc. While mmO₂ plc was created in 2001, the O₂ consumer brand was introduced on 19 June 2002 in the United Kingdom, Germany, Ireland and the Netherlands (where it lasted for only a year before reverting to Telfort). The rebranding was supported by a European advertising campaign, which began on 16 April 2002 across all four countries. Lambie-Nairn created the O₂ brand identity.

Spanish telecommunications company Telefónica acquired O₂ in the United Kingdom, Ireland and Germany in early 2006.

O₂ and Virgin Media merged on 1 June 2021 creating Virgin Media O2, a 50/50 joint venture between Telefónica and Liberty Global.

However, O₂ continues trading with this name as a subsidiary of Virgin Media O2.

O₂ (UK)

Virgin Media O2 ►