Interesting reading Cliff Hanley's obituary he never intended Scotland The Brave to be anything other than a music hall novelty song. It seems to have struck a chord with the populace at the time...
"With the musician Ian Gourlay, he wrote some marvellously witty parodies of Scottish folk songs, substituting institutions like the Glasgow underground for Granny's Hielan' Hame. He was astonished when, having put words to an old pipe tune for use in a variety show, he found Scotland The Brave emerging as the de facto national anthem. It remained so for two decades before being supplanted by Flower Of Scotland.
Of course, Cliff's tongue-in-cheek verses were never designed for mass singing, as was evidenced by the confused expressions on the faces of the national soccer team when they struggled to get their bagpipes, heather and glens in the right order. But played at full tilt by a pipe band, the anthem struck the appropriate note of terror into the opposition."
http://www.theguardian.com/news/1999/aug/14/guardianobituaries2
A talented man, he also scripted this classic "The Bowler and the Bunnet":-
https://www.youtube.com/watch?v=7bDCqRtjd6Y