There are cards in the UK at American Express, Diners Club, GCB, Maestro, China UnionPay International, MasterCard and Visa (including debit).
Visa
Visa facilitates electronic fund transfers around the world, usually through services such as Visa-branded credit cards, gift cards and debit cards. Visa does not issue credit or debit cards, nor do they set rates and fees for customers; They provide financial institutions with visa-branded payment options.
MasterCard
A MasterCard card is any electronic payment card that uses the MasterCard network to process transactional communications. These cards have the MasterCard logo. MasterCard, formerly known as “Interbank” from 1966 to 1969 and “Master Charge” from 1969 to 1979, was created by an alliance of several regional bankcard associations. The alliance was in response to a Bank of America service issued by Bank of America. Bank of America, which later became known as Visa Credit Card, published by Visa Inc.
China Union Pay
China Union Pay is an electronic payment system that is considered to be the only national payment system in China. Founded in 2002, China Union Pay has issued about 7.5 billion cards. This is more than both Visa and MasterCard. UnionPay International, (UPI) is a subsidiary of UnionPay China. UnionPay China focuses on the global expansion of UnionPay.
Dinner
Founded in 1950, Dinner Card members come from over more than 80 countries and can use their cards in more than 185 countries. Diners Club members enjoy a number of exclusive benefits related to travel and recreational activities, including complimentary lounge access and full initial coverage on rental car collision and damage insurance. Central to the philosophy and marketing strategies of the Travel Diners Club.
American Express
American Express or AMX is one of the largest credit card providers in the world. AMX processes approximately 22% of all credit and debit card transactions worldwide. AMX is not only a credit card provider, but also a processor and acquisition bank.
American Express provides card processing for Amex cards as well as merchant service contracts and an online payment gateway for e-commerce merchants.