There are at least 4 scene that have been deleted from the final film. These scenes have never been released anywhere in full, apart from on a short documentary that came with the 1997 UK video, but even then they are shown as photographs and not the actual full scenes. Most notable was the entire deletion of almost all of the dialogue from Ace Face (played by Sting), includng 2 extended scenes from the police van and one of all the mods meeting up on their scooters before going to Brighton. Supposedly, the reason that all of Ace Face's dialogue was deleted was that Sting and the producers both agreed that this ruined his 'mysterious' character that he was playing and also may have taken the focus of the protagonist of the story, Jimmy.
About half a dozen scenes had been cut from the original German releases in a more or less random selection, shortening the movie by some 20 minutes. Newer versions seen on cable TV include these missing parts non-dubbed with German subtitles.
In the US cable TV version only some of the swearing has been dubbed over, presumable because of confusion caused by the cockney accents.