Dave,
Glad to hear that you have got fixed up with the horn part, but I'm so sorry to hear about Taff, lets hope he makes a full and speedy recovery, he has helped me several times with parts and information, always so enthusiastic and knowledgable.
I still live east of Leeds near the A1, and it was a long way to Halifax speedway in Dads mini cooper before the days of the M62! I've just dug out the remains of a Halifax Dukes programme(from 1966!) that was stuck to the garage wall along with a rosette of Eric Boocock, unfortunately both damaged by damp.