XL,
you'll get cheap IR in Spain but you'll also get a mixed bag of reviews. The FAA/JAA conversion route is still popular but with a weak dollar it may not be cost effective.
Diamond twinstar FTO's seem the popular choice, for cost, and 'modern' systems. Theres plenty of steam driven seneca FTO's as well, slightly more expensive though.
The big schools are booked up with the usual integrated boys and girls so you will probably have to look at some of the smaller UK FTO's to get a place. Thats assuming you want a JAA UK course. Many schools are booked solid for months in advance though, best to phone around and see whats on offer.
It all depends on what your after though, be it MEIR?? SEIR??, Budding airline pilot or PPL business flyer wanting an IR??