Good to hear that Harry Boardman still gets listened to. Other records of his or that he's on can be seen on this site:
Harry Boardman

"Transpennine" with Dave Hilary is one of my favourites.

Comic songs are always difficult to keep listening to as are jokes - once you've heard them they're not funny anymore. I used to do a few of Mike Harding's comic songs but when you've done them to death and people don't laugh at them you have to move on. On the other hand I can sing his more serious songs like "Jimmy Spoons", "King Cotton" and "Christmas 1914" at regular intervals and people will listen and join in and enjoy the songs.
Don't forget Vera Aspey's solo LP "The Blackbird" - some great songs on there without Gary interfering! Their first LP "From the North" has some good non-comic stuff on it as well. Two LPs that are crying out for a CD release! After that they tended to become more of a "music hall" act for school PTA evenings, etc and went away from the more serious side of things.
The Oldham Tinkers also have many songs inbetween their comic tracks that are worth listening to. A lot of them I can relate directly to history lessons from school, especially "Peterloo". Talking of Peterloo, catch Geoff Higginbottom's CD - Peterloo. Mainly self penned songs about the period well worth a listen.