Episode #1.4 - S1-E4
Revealing mistake: When Justin is dropped off out side the school in his father's car you can see Benny behind the fence waiting for his cue.
Grange Hill (1978)
1 revealing mistake in season 1
Starring: Gwyneth Powell, Lee Cornes, Sally Geoghegan, Stuart Organ
Genres: Family
Continuity mistake: The third years in this series were first years in series two.
Maria: Do you know what you are, Parrott?
Mr Parrott: Mr Parrott to you.
Maria: A complete prat. The kids know it, the teachers know it, and now it looks like your ex-fiancée has got the message as well.