I remember Forum very well as as two of the group came from my home town of Barnard Castle in Co Durham. One was a guy called Pete Beresford, who as far as I know, is still teaching in the area. He used to run the Black Swan Folk Club in Staindrop in the seventies. I remember him singing Staindrop magical women's circle meet tonight" and "My grandmother's Rocking Chair" Not sure if he is still singing though.
Another of the group was Sandy Stills who is still teaching and sings and plays guitar and manolin with The Judith Haswell Band, a north east based group.
Hope this helps.