I was reading about Ash's Clio radiator thread, I am not sure what car that is from, but I thought I would mention that I am using a rad out of a 1987 Hyundai Excel. I am not sure if the car was available in the UK or if it was, it might be called something else.
I have added a few photos to show that it seems to be a good fit under the Haynes nosecone.
It might be a UK option, not sure but thought I would let people know just in case.
Allan