Thanks redexpat I'll have a look on-line. I don't think my family or friends use iphones. I know I can get a PAYG for my old Nokia but I was hoping to be able to use my iphone as I am addicted to it like it.
Yes, I did just that at Christmas. My phone didn't work at the stopover in Dubai.I just went in to O2 when I got there and I kept the UK sim card in for the flight home so my pesky infant could play on the phone.