The Network TV version includes extra footage and alternate ending:
The original UK cinema version was cut by 1 sec to remove a single instance of the word 'fuck' for a PG rating. The cut was restored in all video releases and the certificate upgraded.
A scene with Mahoney (Steve Guttenberg) and Schtulman (Peter Van Norden) chasing muggers in a park with the aid of Schtulman's dog.
Hightower being mistaken as a female meter maid.
Fackler (Bruce Mahler) returning from the gas station restroom to find his squad car vandalized and his partner Dooley (Ed Herlihy) locked in the trunk.
Instead of the movie ending with Tackleberry (David Graf) and Kirkland's (Colleen Camp) wedding, we see Sweetchuck (Tim Kazurinsky) and Zed (Bob Goldthwait) enrolling into the Police Academy and Zed is told by Commandant Lassard (George Gaynes) that he's going to need a haircut, much to Zed's dismay.
There is also an additional scene in network TV versions where Tackleberry and Kirkland arrive at the zoo after all the action happens and get mad for being late. This is a reference to the first film, where Tackleberry missed all the action following the riot.
