I researched this when I left and the UK LHD car companies were quite expensive. Then I looked at buying in Germany and its true to say you can pick up a bargain there.

You just need to bear in mind that you need to have owned it for 6 months when you come here. That means theoretically you might need to change to UK plates and then change to Spanish plates which is a pain. Spanish matriculation will cost you about €600 - €900.

In the end we decided it was too much hassle and bought here.