I’ve never seen the whole of this movie, just clips from a documentary – I believe the documentary was about British horror cinema, and therefore that the film is British, but I can’t be sure of that. I’ve never been able to trace the documentary either, it may have been on the BBC or Channel 4 in the early 2000s.

The scene I remember involved a circus troupe in colourful costumes performing aerial acrobatics. It was shot in such a way that the performers appeared to be permanently airborne in a series of somersaults. The scene has stuck with me because it was shot and cut in such an extraordinary way, with a strong psychedelic feel to it.

I know this is very little to go on, but perhaps someone recognises the scene I’m describing?