That's a good song, Rob, but not Gill's! Note the credits at the bottom of the page in your link.

I have asked Gill again if she has recorded her John Rae song on any album, and wil let you know the answer. She did say she sang it again at her weekly session in Edinburgh kast week, but afraid I was away and missed it.

Lesley Riddoch wrote an excellent article criticising the Channel 4 programme for failing to mention John Rae, see:
John Rae