Bliss it was to be a fan of Thin Lizzy 50 years ago, in November 1975. Phil Lynott referred to fans as “supporters”, an apt term given Lizzy were followed with a level of partisan fervour generally reserved for football teams. And they were on a sharp upward curve.

There was a time when Gilbert & George made provocative pictures that probed the body politic for sore points that others preferred to ignore. Trawling the streets of East London, where they’ve lived since the 1960s, the artist duo chronicled the poverty and squalor of their neighbourhood in large photographic panels that feature the angry, the debased and the destitute.