Thanks for the responses. I don't live local to any shops that do this sort of thing, I'd have to go into town to do it and I don't really have time to do that which is why I was hoping to do it online.
Has anyone heard of fast gsm and phone unlock before? I can't tell if they look reputable or not.
From experience some smart phones are not as easy to unlock as the old types. I waited months before the codes became known to unlock the handset I had.
For the basic variety any phone market stall can probably do it while you wait. Otherwise most high street mobile shops can offer the service but may need to keep the handset for a while, probably send it off.