giffgaff

A virtual carrier (MVNO): it sells service on another carrier’s network, in United Kingdom.

About 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.

From Wikipedia, under CC BY-SA.

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Virtual carriers (MVNOs)142 carriers
Mobile carriers in United Kingdom29 carriers
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