Continuity mistake: The broken glass on Nathan's face and arms disappears when he is pouring out the rice, but reappears when he is yelling into the PA system.
Horrid Henry Tricks the Tooth Fairy - S1-E7
Continuity mistake: When Peter bring his bag's into Henry's room, if you look closely at the wall behind Peter it is pink, but in the next shot if you look to the right, the wall is green - the usual colour, it then reverts back to pink again.
Continuity mistake: At the start of the episode when Vinnie and Rocket search for Gabby's pet badger, after updating her, Vinnie goes back into his bedroom where Rocket is seen in the room pulling out a pirate's peg leg, Professor Q's "oscilloradioscope", and a baking soda volcano from behind his back. However, for about a frame, the other 2 items were also peg legs before turning into the respective item. His mouth also tilts between frames. (00:00:25)