Revealing mistake: Right at the start there is a TV 'clip' showing the crowds outside the Lyceum. This is supposedly 1974 but you can quite see a pretty modern looking CCTV camera above the Lyceum door.
Revealing mistake: When everyone is running to the Brian Slade concert, Malcolm from The Flaming Creatures seems to accidentally drop his feather boa. But if you watch very closely, you can see him sneakily pull the boa from around his neck and throw it to the ground.