How long you gonna be here for mate?
http://www.ebay.co.uk/itm/NEW-THREE..._Home_Phones_Sim_Cards_CV&hash=item19c7571781
http://www.ebay.co.uk/itm/3-UK-MOBI..._Home_Phones_Sim_Cards_CV&hash=item27c40adb9c
Basically get something like that. You can get 1GB ones which last for 1 month or 3GB ones which last for 3 months. Basically get the SIM out of the packaging stick it in and you're ready to go! Speeds on 3 mobile I find are the best here as well on 3G. Once you have used up your allowance or the time has run up they stop working and you can buy another! You don't need to faff around with putting credit on it or giving any of your details.
http://www.ebay.co.uk/itm/NEW-THREE..._Home_Phones_Sim_Cards_CV&hash=item19c7571781
http://www.ebay.co.uk/itm/3-UK-MOBI..._Home_Phones_Sim_Cards_CV&hash=item27c40adb9c
Basically get something like that. You can get 1GB ones which last for 1 month or 3GB ones which last for 3 months. Basically get the SIM out of the packaging stick it in and you're ready to go! Speeds on 3 mobile I find are the best here as well on 3G. Once you have used up your allowance or the time has run up they stop working and you can buy another! You don't need to faff around with putting credit on it or giving any of your details.