The UK cinema and early video versions were cut by 12 secs by the BBFC to edit the killing of the tramp and a man's face being hit with a baseball bat. The 2003 wide-screen Vipco release is the longer version and restores all of the previous UK cuts.
The British and American releases differ greatly. The American Best Film & Video release is missing the opening speech where Fisher decides what to do about Anne and the fight with the camp, tap-dancing gang, scenes that are in the British release. However it gains 3 scenes on the British version:
A longer scene of the Riders discovering the body of Chris by the pier.
After Sandy and Speedy's cremation all the Riders take a handful of cremated ash and throw it into the river in a ritual.
A conversation between Anne and Trash on the beach, just before she is kidnapped by the Zombies, where she says she wants to leave because she feels responsible for all the deaths that have happened and Trash makes a speech about how "death is part of life, we live with it and it's scent gets on our skin". (This also makes Anne's dying words to Trash make a lot more sense at the film's close).
The German EMS DVD release is the full uncut version with all the violence and scenes missing from the British and American versions (fight with the Iron Men, Trash and Anne at the beach etc).