re: Dave Illingworth's offer:
"I can supply lyrics if anyone is interested"
Yes, please. I was toying with a 'Union Canal' version but never really made the time. It's town names I had trouble with and also a mule didn't seem that English (but I could be wrong!) so tried to get pony in there. It's the chorus that is the real show stopper so I'm not too worried about like-for-like verses. This thread has inspired me to have another go