giffgaff

Giffgaff Limited is a mobile virtual network operator (MVNO) and internet service provider (ISP) in the United Kingdom. It utilises the O2 UK network and Virgin Media broadband network as a wholly owned subsidiary and online-only flanker brand of Virgin Media O2. The stylised 'giffgaff' brand was founded by Gav Thompson a former marketing executive for Telefónica UK and was launched online only, on 25 November 2009.