There were lots of ad hoc songs though not very memorable (at least I can't recall them), except for Kay Sutcliffe's Coal Not Dole.
Then there's Alex Glasgow's Close The Coalhouse Door, though that's earlier, having been written before Alan Plater's 1960s drama of the same title and incorporated into it.

There was a lot of songwriting associated with the 1972 building workers' strike against the lump, a memorable one being Shrewsbury 24 about the flying pickets trial at Mold Crown Court when Ricky Tomlinson and two others were jailed. Sandra Kerr used a MacColl tune used for The Fight Game, though I suspect it was nicked from somewhere else.

Well done the spammer who managed to revive this thread!