Ok, so that was fairly painless.
I activated my new SIM from giffgaff today. As it was recommended by a friend I got a free £5 credit (as did they). I added a £10 goody bag which gets me 500 minutes, 500 texts and 1 Gig of data to be used within a month.
On another friend’s recommendation I bought an unlock code from mobileunlocked and had my phone working on giff gaff within 30 minutes of ordering the code. I’ve notified them of my PAC code and my original phone number swap is in the pipeline. I’m a very happy bunny.
I’m hopeful of a more interesting and user-friendly service after getting the following message:
I automatically got an affiliate page where, if you fancy giving giffgaff a try, you can order a free sim. You’ll get £5 extra credit and I’ll get some points.