At 21.35, Dean tells JJ, I didn't say you looked like Prince Charles. I said you look like King Charles the dog.
Prince Charles ceased to exist in September 2022. He became King Charles after his mother's death. This was first screened 9 months later.
At 16.02, a foot all match is on TV. It is not clear whom is playing but SFC would not be used as initials for any team and neither would the five letter abbreviation of Inter. TV stations generally only use 3 letters.
The advertising hoarding in the corner is for Bank Of Scotland so it must be assumed the home team are Scottish but with a fake TV channel logo on the screen too, nothing can be taken for granted.
It seems it was OK for a children's choir to sing swear words in the show but not for one of the cast to be seen naked off screen alone in their dressing room.
At 4.24, just before Dave and Dean meet in the playground, a young girl playing an extra can be seen waving to the camera.