Cheers Nick for spending the time to answer my questions!That was most informative.

The best trumpet teacher i have ever had was a little know Italian trumpet player in Leeds. I believe he played in some of the big Italian Orchestras. Although his English was a little rusty (at that time), he was a very knowledgable, and passionate teacher.
He had a superb technique, and was a huge advocate of disciplined Charles Collins, and Thibaud practise.
After spending 2 1/2 years of banging my head against a brick wall with another teacher (prior to the Italian teacher) i was at the point of packing in playing. Even with his inspirational lessons (and no money student at the time) I decided to pack it in.
5 years later i returned to playing as a cornet player in a brass band and have never looked back since. In many respects i have become my own best teacher. By reading the tips on this website, and other musicians advice i have practiced hard and can play stuff now that i couldn't even contemplate all those years ago.
Maybe the reason that i never succeeded all those years ago was the fact that i was a poor student unable teach myself based upon the advice i was given. As one of the pros said on this website said,"i have never taught anyone how to play the trumpet in my life."
Getting back to my original question of great (cornet/trumpet)British teachers, has anyone ever been taught by some of the "old school players"
e.g. Jack MacIntosh, Jimmy Shepherd,
Harry Mortimer, Willie Lang, or (although he isn't old school ) Elgar Howarth?