We're one of the world's leading mobile communications providers, operating in more than 30 countries and in partnership with networks in over 40 more. Across the world, we have almost 360 million customers and around 19 million in the UK. We made the first ever mobile phone call on 1 January 1985 from London to our Newbury HQ. Still located in Newbury, we now employ over 8,000 people across the UK.