epay is one of the UK's largest suppliers of electronic payment solutions offering

 payment and distribution services at both large and small retailers across the UK (including Sainsbury’s, Tesco and the Post Office®). 

You will see the epay sign outside many newsagents and Post Offices, particularly in London, as epay are the sole retail supplier of Central London Congestion Charge payments.  epay was one of the first, and continues to be the largest, provider of prepaid Mobile Airtime top-up services in the UK, and also offers calling cards, gift cards, prepaid cards and digital content within its portfolio.

epay has a worldwide network of around 282,000 retailers and 591,000 points of sale
across a number of international markets including Australia, Austria, Brazil, France, Germany, India, Ireland, Italy, New Zealand, Poland, Romania, Spain, Switzerland and USA; providing tailored electronic payment and cash collection solutions including point of sale systems integration and reporting service.