You can also consider using a mortgage broker in the UK to get mortgage on your Spanish property. This was certainly a good option for me a few years ago, but I don't know the current market.
As Mickyfinn says beware of the extra costs though. We are currently buying and I've just received a note from the solicitor listing the costs:
Purchase tax (8%) €14,000
Resolution clause (whatever that is!) €1,875
Registration (again dunno what this is for) €600
Notary €900
Solicitor €1,452 incl IVE
So the €175,000 purchase ends up costing €193,827. But I suppose that in fairness that's no different to the UK. I haven't queried the Resolution clause or Registration fee yet, does anyone know if these are standrard and what they're for please?