Umm _ I don't know if it got UK-national exposure, but Dougie Maclean's song was recorded for a lager TV ad years ago, by Frankie Miller.

For some people that would have been their original (and perhaps only) exposure to the song.

It's a rendition that is pretty much at odds with the wistful mood of the lyrics, in my opinion.

I don't know if that is where your Tyndrum band got their inspiration, but it's possible...