Getting hold of a GSM SIM Card in the UK is pretty easy. Quite often you can order them free online from a number of websites. But you can also buy then from several mobile phone stores or supermarkets. You can even get them from vending machines at the airport but these are not usually very good deals, but handy if you need to call someone soon after landing. Below is a summery of some of the most popular SIM Cards in the UK.

ASDA SIM Card
ASDA is one of the biggest supermarkets in the UK. It is owned by the US company Walmart. Their SIM Card normally costs 50p and can be bought from their chain of stores. ASDA operate a very simple price structure – 8pm per minute for all UK call (Land line and Mobile), 4p for UK SMS and 20p per megabyte for internet usage. ASDA uses Vodafone as their backbone. So any unlocked phone or old Vodafone should work.

Tesco SIM Card
Tesco is the largest supermarket in the UK. They use O2 as their service provider. They have a variety of calling plans available and sell their SIM cards in their stores.

Virgin Mobile SIM Card
Virgin was one of the first major virtual phone companies in the UK. Virgin uses T-Mobile as their service provider. They sell phone through various outlets including online and through the Virgin Record stores.