What prepaid phone cards are the most popular in the UK?

What major shops in Florida sell phone cards to contact the UK?

• By major, I mean shops you see globally and popular shops a lot of people know about. It doesn't even have to be too popular, just anything that sells phone cards.

• Answer:

  You do not need to buy a phone card to call UK from Florida. there are a lot of long distance phone companies that offer such services. All you would have to do is to set an account that works like a card. It can be done over the Internet. Types of accounts and prices vary for different companies. Once a person has an account it allows to make phone calls from either any phone or from a certain phone based how the account is set. It can be a land line or a cell phone. It works much safer than a calling card.