John Lydon (the former Johnny Rotten) was originally approached for the role of Jimmy and even screen-tested for the role. However the distributors refused to insure him for the part and he was replaced.
The scene in the pie shop where Jimmy goes for a bite of "pie, mash and liquor" was shot inside A. Cooke's Pie & Mash shop at 48 Goldhawk Road, Shepherd's Bush, London. The Who began their career in Shepherd's Bush, performing their early gigs at the Goldhawk Social Club (205 Goldhawk Rd).
The scene where Jimmy & his mates are on their bikes overlooking the sea & pier & says 'That is Brighton', is actually Eastbourne. That's why beachy head is on their right, when it should be on their left if they were in Brighton.
When the table is thrown through the window, this is done by Alan Curbishley, the former manager of Charlton Football Club. This was arranged by Alan's uncle Bill Curbishley who is the manager of The Who.
Directed by Frank Roddam, who also devised the tv series "Auf Wiedersehen Pet". Several actors appeared in both Quadrophenia and AWP, including Gary Holton, Timothy Spall, Ray Winston, Michael Elphick and Vincenzo Nicoli.
While regarded as multiple 'goofs' the various cars filmed that aren't in the proper time period were explained by the movie makers,with them stating that as they hadn't legally had the roads closed for filming the scenes with the Mods and Rockers on their Scooters and Bikes,the onus was seen as more important to keep an eye out for the Police,as the helmet laws had changed by the time of filming. Arranging road closures and ensuring proper period cars were included would have considerably raised the budget of the movie.
On the front of the scooter that Jimmy steals from Ace are the yellow initials "GS". These initials do not actually stand for Gordon Sumner, the real name of Sting, who plays the part of Ace Face. 'GS' stands for Grand Sport, a popular model of Vespa scooter in the 1960s.
In the original script, the sex scene between Jimmy and Steph took place in a basement and detailed that she would be shown naked. Leslie Ash made it clear she wouldn't do nudity, even if it meant losing the part. In the end the producers agreed to shoot the scene clothed - and changed the location to an alleyway.