Starring: Jane Hylton, Jessica Forte, Michael Crawford, Michele Dotrice
Christmas '75 - Learning to Drive - S99-E2
Other mistake: The walls of Frank's house wobble whenever he opens the front door.
Christmas '74 - Jessica's First Christmas - S99-E1
Other mistake: When Frank open his front door to Mr. Jackson the walls around wobble.
Wendy House - S3-E2
Other mistake: When Frank, Betty and the insurance assessor are sitting on the sofa, it's obvious that all three actors are trying hard not to laugh when the assessor starts sinking into the sofa.
Only Fools and Horses
At the beginning when Frank is directing the vans, we see that one gets its windscreen broken by a ladder from another van. However, the glass breaks just before the ladder touches it.
Michael Crawford performed all of his own stunts in this series.
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