Other mistake: Tucker, Alan and Tommy miss the bus because the driver won't wait, a few minutes later the next bus arrives and it is the same vehicle as the previous one (registration number AML3H).
Grange Hill (1978)
1 other mistake in season 4 - chronological order
Starring: Gwyneth Powell, Lee Cornes, Sally Geoghegan, Stuart Organ
Genres: Family
Episode #2.8 - S2-E8
Audio problem: When Cathy and Trisha are walking to the post office with Mr Hargreaves walking behind them their mouths are not moving in sync with their dialogue. (00:09:55)
Vince: Where are you going?
Hollo: Nowhere.
Vince: Can I come?
Hollo: If you want to.
Trivia: Future supermodel Naomi Campbell appears throughout series 5 as an uncredited extra.