This is The Sex Pistols Experience, sending The 100 Club hurtling back to 1976.
At the end of the evening they became Public Image Limited and were joined by original PIL (and early Clash) guitarist Keith Levene...
The musical likeness of both The Sex Pistols Experience and support act, Clash tribute band Rebel Truce, was spot on. Physically, in gestures and stances as much as looks, "Johnny" and "Sid" from the former and "Joe Strummer" from the latter were the stand-outs, Johnny in particular. At one point, however, Sid lost sneer concentration and turned into 50's rocker Joe Brown...
Here's "Joe" and "Paul" from Rebel Truce...