skyhigher,
There are several places that you can try. How about Bristol? One of the better places to obtain your IR in the UK as the airspace there is relatively uncongested.
You should also consider places where there is a resident examiner:
Bristol
Leeds
Bournemouth
Cranfield
Exeter
Once you get your IR, you might try going to Jerez in Spain. The way things are at the moment, you would certainly get an interview.