O2 is the commercial brand of Telefónica UK Limited and is a leading digital communications company with the highest customer satisfaction for any mobile provider according to Ofcom. With over 23 million customers, O2 runs 2G, 3G and 4G networks across the UK, as well as operating O2 Wifi and owning half of Tesco Mobile. O2 has over 450 retail stores.
EE, part of the BT Group is the largest and most advanced digital communications company in Britain delivering mobile and fixed communications services. EE has approximately 553 retail stores and services more than 31 million connections across its mobile fixed and wholesale networks.
The Three network was built for the internet. We carry over 40% of the UK’s mobile data traffic. We want our customers to make the most of the internet using their devices whether that’s catching up with the weekend’s goals, updating their Facebook page and Twitter feed or Skyping their mum on the bus home.
Giffgaff is the mobile network run by you. At the heart of it, we believe in something simple: ‘a better way to do mobile’. A belief that gets us up in the morning ready to challenge the old way of doing things. We’re not going to shout and stamp our feet because, with our members, we don’t need to. We’re just getting on with it. We are the David amongst Goliaths in mobile-land. We are a new way of doing things and our ambition is endless. Hence the name ‘giffgaff’, which is ye olde Scottish for mutual giving. That pretty much sums us up.

Partnership Growth
and Network
Proposition Solutions

We’ve come a long way since making the first ever mobile call in the UK on 1 January 1985. Today more than 400 million customers around the world choose us. In 30 years a small mobile operator in Newbury has grown into a global business and one of the most valuable brands in the world. We now operate in around 30 countries and partner with networks in over 50 more.
Lebara Mobile launched the first ever low-cost international mobile service in the Netherlands in 2004. By the start of 2010 we had over 2.5 million pre-paid Mobile SIM cards customised to the needs of international communities, particularly migrant workers.
Virgin Mobile was launched over a decade ago as the world’s first virtual mobile network and are also one of the largest fixed-line home phone providers.
The world's largest international mobile virtual network operator with over 16 million customers and a new customer joining every two seconds.