We are fed up of where we live, everything is overpriced and seem to pay through the teeth for everything, houses, taxes, bills, designer baby clothes etc.
fixed that for you

But most importantly will be work. I currently work offshore in the North Sea and I don’t think I could continue the job I we moved as it is as and when(as in 24hr notice) be at Aberdeen heliport to go away for god nose how long at a time. I’m into IT and computers a lot, this was my last job, but no formal qualifications so about 6 months ago I enrolled in some courses to get me started
though for a more serious reply - ref: the above - if you're just starting out in IT and don't have much real experience then it probably isn't a good idea and you might be better off sticking with your current job, Spain has fairly high unemployment, lower salaries and you'd be taking a big hit anyway going from off shore work to some entry level printer monkey job in IT. You can surely make it back to the UK in 24 hours form Spain, especially if you relocate near an airport. I'd keep the (presumably six figure) offshore pay rather than take up some low paid IT work in Spain.
If you want to move to some sunny place with lower cost of living and lower salaries then it is much better to do it keeping your existing job if possible - like working from home for an existing employer or getting a stint in their office over there but keeping your UK salary. In your case surely keeping a highly paid offshore job vs entry level IT is a no brainer - you're away from your family when you're offshore in the UK anyway, you've just got an extra few hours on a plane at the start and end of it this time.