Some sex references nothing too bad.

There are some scenes of the fight between Joe Weller and KSI. Minimal blood is seen and this is only shown a few times.

Alit of scenes of ksi training is seen which contains fighting his coach sometimes. Quite violent but no blood.

The F Word is used around 5 times. This is what makes the film a 15 in the UK.

The BBFC rated it 15 for: Very strong language, strong sporting violence.

The fights can be intense at times.