The birds chirp merrily and innocence is in full bloom in Frank Marcus's witty critique of safe-as-a-teacosy England. When this classic lesbian drama first appeared in 1965, critics were effusive about its comic portrayal of a forthright, beer-swilling woman - known by friends as George - who is strikingly different from her persona as an apple-cheeked district nurse, Sister George, on Radio 4.