Go for it, you'll regret it if you don't.
We left the UK 3 yrs ago to live in Australia. A compnay offered me a job and flew my family and myself out here, then shipped all of our stuff over from the UK. I have since left that company and now work in Brisbane.
We did it for lots of reasons. Far better job prospects, excellent money, change of lifestyle, better weather, sick of th eway the UK was/is going.
We have flown back a few times, and each time we notice that we feel less and less about the UK. It's good to catch up with friends and family, but that's the only real attraction that the UK has.
People say that you should give it at least 2yrs, as you could be homesick during that time, but less so afterwards.
Remember, Spain is a lot closer to the UK, and flights are a lot cheaper than if you were travelling from Oz!
Go fo it, life is too short!!!