Episode #7.3 - S7-E3
Other mistake: Jeremy is making a copy of Zammo's bus pass - the expiry date on it is 16th December 1983, this series is set in 1984.
Suggested correction: The episode was broadcast in 1984, but the early episodes are set at the beginning of the school year, which is in September. So it's perfectly plausible this takes place in late 1983.
Episode #7.3 - S7-E3
Continuity mistake: When Zammo and Jeremy are first chased by Gluxo and friends they run past three parked cars - a blue Maestro, a gold Toyota and a green Datsun. The camera angle changes to the other side of the road and the Maestro has gone. (00:03:10)




