Continuity mistake: When Daphne and Ian are shopping in London on their first date, they go into a shop with sari's. Daphne is wearing a black blazer jacket when she goes into the change room but when she comes out with a sari on over her jeans, she does not have it on. Then Daphne and Ian leave the shop without it and Daphne does not wear it for the rest of the date, nor carry it about. (00:56:15)
Continuity mistake: When Daphne and Henry are doing the synchronized breakfast thing, Glynnis answers the phone and removes her left earring. However when see puts the phone down, after just telling Henry that he's got to go out now, the earrings have switched places as now the right earring is missing and the left is in place.
Continuity mistake: During Peach and Pear's ball, when Daphne walks down the steps while the photographers take pictures of her, Glynnis and Clarissa see her and Glynnis says "What has she done to that dress?" and Clarissa says "Let's Go", they turn around and walk away, while when they turn the camera to Daphne, if you look at the bottom of the screen, you see Glynnis's back dress and Clarissa's purple dress turning and walking away.
Continuity mistake: In the scene at the end where Henry steps down from the PM election, we see the back of Clarissa's head as she walks in. She's wearing her hair pulled back in a rectangular barrette. A few shots later, when Henry punches out Alistair for lying to him about Daphne, Clarissa leans down to check on him. Suddenly she's wearing an oval barrette.
Continuity mistake: When Daphne is playing with the dog, in one shot her hair is out, then the camera goes to the princess, then back to Daphne and her hair is tucked behind her ear. She's holding the dog so she wouldn't have enough time to push it back without us seeing her hands move to hold the dog properly again.
Continuity mistake: In the scene where Daphne is dressing for the Queen's garden party & goes to put on her black high-heels, she has a boot on one foot, bangles on her arm and black fingernail polish on her hand. Daphne had already removed the polish and put away her American clothes in a prior scene about the changes she makes to be a Dashwood.
Factual error: When Henry is showing Daphne the portraits of her ancestors, he indicates that Field Marshall Dashwood lost an arm at the Battle of the Nile.....interesting, because the Nile was a naval battle, and the field Marshall was in the army.