I requested all UK bases and ended up in the Algarve. Really enjoyed it and could get home easily with 2 flights a day and also via DUB if i was desperate.
After a year I was moved to my preferred UK base (possibly lucky, due to downsizing the base). I have also heard that they're trying pretty hard nowadays to get guys where thay want to be.
Wherever you end up, if you can make it work for a year or two (don't forget the free positioning between your base and home) then personally I'd highly recommend it - been here 5 years now and happy with my lot!