Factual error: The train leaves for France from St Pancras station (clearly identified by The Shire pub), which is Northbound and has no connection to go back south for France.

Continuity: The train that leaves the station is the Flying Scotsman but soon afterwards the train is shown and the engine is a different one.

Continuity: When Cruella has her photo taken on the magazine, she has black hair on her right and in another, the black hair is on the left.

Continuity: When Cruella (Glenn Close) gets turned into a cake, the dogs squirt coloured icing all over her face. A few seconds later she falls against a glass door with her face, and red icing is smeared all over her right cheek as she slides down the glass. In the next cut the arresting officers are taking her into custody, and she has a neat yellow blob of icing on the same cheek, and all the smeared red icing is gone.