can i use an iPhone in the uk?

Jul 9, 2007
northern ireland
hey guys, im currently over in california for the summer and am wanting to buy an iPhone, but when i register it, do i have to take out a contract with att to use it properly, just am not from here so i don't think i can get one, can you take it out on pay and go or a short contract at all? also i will be going home at december and do you think there will be a way of unlocking it for uk networks at all? your advice would me much appreciated! :laugh2: