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: After Vinnie completes his lifetime of tests, Rocket proceeds to mark them and tells him that he failed some tests but that he passed his Art "with a lovely rendition of the Mona Lisa." When Rocket is seen holding up the paper and when the camera shows Vinnie sitting at the desk explaining what he actually drew, the tick on the paper is different between the 2 shots. (00:07:15)