The Father Christmas Suit - S2-E11
Revealing mistake: When Elizabeth is driving Richard's car to the church dressed in the father Christmas outfit with Hyacinth you can see that the handbrake light is on while the car is supposedly being driven.
The Father Christmas Suit - S2-E11
Revealing mistake: There are many Christmas cards scattered around the house but you can see in a lot of the shots that they have nothing written in them.
Suggested correction: It's implied she sent the cards to herself.
What to Wear When Yachting - S3-E7
Revealing mistake: At the beginning of the episode, when the TV repairman is at the door, you can see that the background behind him is a studio wall - not the front yard we normally see on that side of the house. This effect also appears in many other episodes.
