Other mistake: Near the beginning the dividing line in the bathroom has Henry on the right and Peter on the left but as you can see Henry would be on the left due to where his room is and where he would have to walk.
Horrid Henry and the Dinner Guests - S1-E17
Other mistake: When Henry's parents run into the kitchen to get Mrs. Mossy cleaned, Henry's neck is miscoloured for a split second. (00:07:19)
Horrid Henry's Parents' Evening - S5-E19
Other mistake: When they go to Henry's parent teacher talk they get lost. They had no problems at Peter's parents evening in an earlier episode.
Answer: She was born in 1984 so would have been 24 when the 1st episode was recorded/aired.
Ssiscool ★