Continuity mistake: When the gang first arrive at the stately home Albert parks his car next to a coach. When the camera angle changes the car has moved back a few yards, and when the gang leave the car has changed position completely.
Character mistake: When the gang split up to look for the missing Billie and Tiger, Scooper says "me and Sticks will look up here" and goes upstairs but Sticks goes with Brains to search the ground floor - it's Spring that goes upstairs with Scooper.
Continuity mistake: When the gang and the staff are running through the stately home, several characters change position or disappear between shots.
Continuity mistake: When we first see the stately home as the gang arrive (with the coach parked outside) the same shot is used just before the gang get into Albert's car to go home, when the angle changes the coach has disappeared.
Visible crew/equipment: When the gang are getting into Albert's car to go home, you can see the crew and camera lights reflected in the car door.