You can do the flight training with a JAA approved school in Spain. If you are converting your license from another ICAO state there are two options depending on your experience and the aircraft ratings you have on your license.
If you have flown jets and have more than 500 hours on type you can do the skills test with a CAA examiner in the simulator.
If you have only flown light aircraft, I think you will have to do a commercial and instrument test.
Hope it helps
The CAA in the UK is nearly as bad as the Chinese CAD. Don't expect to get any help from them...............