As a post script to my earlier post, having completed my IMC, I then did my multi-engine at Cabair Denham. I have always liked Denham very much - originally I rented aeroplanes from The Pilot Centre - they have very competitive prices indeed for a school so close to London.
I was introduced to my instructor, one Spencer Flack. Being from NZ, I had no idea at the time that Spencer had contributed so much to the UK aviation scene particularly in relation to warbirds. It was only by chance that he modestly admitted to having once owned, displayed and even raced the heavy metal.
He was a superb instructor and, even in the brief period of time that I knew him, obviously quite a character. It was a sad day indeed when the news of his motor racing accident came through.
If Cabair Denham was good enough for Spencer to give freely of his time (he was instructing for the fun of it) then I think it is fair to suggest that it ranks highly as a school. I thoroughly enjoyed flying there.