Gaffes

Daphne's bedroom is obviously not part of the house we see from the exterior. Daphne's room's interior shows it as a corner room (a window is on the long wall) with a bay window. But the Dashwood house is a flat-front, and When she and Glynis and Clarissa talk to Lord Dashwood out their windows, Daphne is supposedly in a room in between the other two, with a single French window opening onto a balcony.

When Ian first comes to Dashwood Manor and is arguing with the security guard about having an appointment to see Daphne, the size of the gap in between 2 of the gate's metal bars changes from wide during shots of Ian speaking to very, very thin during shots of the guard speaking.

When Daphne is making herself over as a "proper young lady" you see her removing her nail polish, and later in the montage she's wearing it again.

When Glynnis is on the phone at breakfast she takes out her earring while on the phone. When she hangs up the phone the missing earring jumps from the left ear to the right ear.

in the last scene when she is dancing with her dad and having conversations her left cheek is touching his left shoulder and cheek but as the conversation progresses the camera shots keep changing and her right cheek is touching his right cheek, back and forth and back and forth again and again.

All invitations from Queen Elizabeth II are commands, forwarded by the appropriate member of the royal household. As such when the film says 'Her Majesty the Queen invites you to the Annual Garden Party' in reality the invitation would read 'The Lord Chamberlain is commanded by Her Majesty to invite Lord Dashwood and the Honourable Daphne Dashwood to a Garden Party'

Both Henry and Daphne are referred to incorrectly. As the hereditary Earl of Wycombe Henry Dashwood would not be referred to as 'Lord Dashwood' as he is in the film, but 'Lord Wycombe' whilst Daphne, as the daughter of an Earl would not be referred to as 'Miss Daphne Dashwood' But Lady Daphne Dashwood. In fact it states early in the film that Henry has given up his seat in the House of Lords, but as hereditary seats are attached to peerages, not individuals, the only way for him to do this would be to give up the peerage altogether, and as such become 'Mr Henry Dashwood'.

Much is made of Henry disclaiming his seat in the House of Lords as a hereditary peer, something that was not possible to do until 2014 without giving up the peerage entirely. However, the House of Lords Act 1999 removed the right of hereditary peers to sit in the Lords, mooting the issue. (Only the Lord Great Chamberlain and the Earl Marshal, important ceremonial figures, still sit by right.) Hereditary peers now elect ninety-two of their own to sit in the House - a peer who does not wish to sit simply does not stand for election. Barring unusual circumstances, Henry would have never had a seat in the House of Lords to give up.

During Henry's press conference near the end, there is a shot behind his head showing the entire audience. On the far wall opposite Henry, two Union Jack flags are hung vertically. The one on the right is hung upside down. The proper way to hang the flag dictates that the thick white stripe in the upper left-hand corner is on top of the smaller red stripe, as correctly seen on the flag on the left.

Henry is also mistakenly referred to as both "Lord Dashwood" and "Lord Henry Dashwood." These titles fall into mutually exclusive categories in the UK. "Lord Henry" is only used for the younger sons of Dukes and Marquises. Since Henry is heir to the peerage, he cannot be Lord Henry. His mother is also referred to as both Lady Jocelyn and Lady Dashwood, which is also incorrect.

When Ian collects Daphne from Uni on his motorcycle at the end neither are wearing helmets, this is an offence in Britain.

At the New Jersey wedding in the beginning of the film, during the father-daughter dance, there is a shot of the bride's back where you see that only about 5 out of the 30 buttons on her dress are actually buttoned.

When Henry shows up at the wedding to surprise Daphne, you can briefly see Ian getting out of the boat as well. You actually see him twice. Then later her father says he brought along a large present: none other than Ian.

The credits state "AMERICAN HUMAN ASSOCIATION monitored the animal action." This should be the American HUMANE Association, as shown in the logo beneath the disclaimer.

The registration number of the taxi the young Libby leaves in is, at first, CYP 44V - when her bags are thrown in. This is recycled footage from shots of the same vehicle (CYP 44V) which we see the older Libby and daughter Daphne leave in towards the end of the film. Additionally, as the younger Libby leaves, after her bags are thrown in, the registration number changes to MMX 902L (a vehicle seven or eight years older).

When Peach and Pear meet the twin boys when they're talking to Clarissa, they wave and say "tood-a-loo," but their lips do not move.

When Daphne is being sprayed by the shower head before they go to the Royal Dress Show, she is screaming but her lips are not moving.

US ringer style used on a British phones.

When Daphine is riding in the number 8 bus in London it says "Trafalger Square" in the front. The actual number 8 bus does not stop at or near Trafalgar Square.

When Henry calls Libby right after Daphne arrives, he dials her number without using Directory Assistance - even though he hasn't seen her in over 17 years. Also, he doesn't press anywhere NEAR enough digits for an overseas phone call.

Lord Orwood claims that the chandelier was given by Napoléon Bonaparte to Josephine after the Battle of Borodino. The Battle of Borodino took place in 1812. Napoleon had divorced Josephine in 1809. He would have given the chandelier to his wife Marie Louise, whom he married in 1810.

In front of the portrait of his ancestor, Henry tells Daphne that Field Marshal Bingley Dashwood lost an arm at the Battle of the Nile. Field Marshal is the highest rank in the British army, but the Battle of the Nile was a naval engagement.

In the photo montage of Daphne's emergence into society, "auction" on one of the headlines is spelled "aution".

In the Invitation inviting Daphne to Peach and Pear Orwood's Coming Out Ball, the invitation reads "Miss Peach and Pear Orwood invites..." whereas an actual British society invitation would read "the Misses Peach and Pear Orwood invite..."