There's also the album "True and Bold" put out by Dick Gaughan and the STUC to raise funds for the strikers. It's still available from most stores.
In addition to that, one of the most powerful songs I have ever heard regarding the strike is called "Sanctuary" and can be found on the album "Gathering the fragments" by Janet Russell.
It may not have been sung widely but in my opinion it's worth looking at. Unfortunately I'm not at home or I'd post the lyrics.

Andy