About us

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 and sponsors The O2, O2 Academy venues and the England rugby team. Read more about O2 at o2.co.uk/news.

Telefónica UK Limited is part of Telefónica Europe plc (a business division of Telefónica SA) which uses O2 as its commercial brand in the UK, Slovakia, Germany and the Czech Republic.

Telefónica UK Limited is registered in England and Wales. Registration number:1743099.

Its registered office is at:
260 Bath Road,
Slough,
Berkshire,
SL1 4DX,
United Kingdom