In the book, Bridget Jones is obsessed by the actor Colin Firth from the BBC TV series Pride and Prejudice (1995), and even gets to meet him for an interview. This plot-line is omitted from the film, where Firth actually plays her love interest Mark Darcy. They did, however, film the interview scene with Colin dressed in his street clothes, and Renée Zellweger in character. The scene is included in the DVD extras.
During the filming in Thailand, the cast stayed on Nai Yang Beach, close to the airport in Phuket. They often drank at the little shack bars down on the beach, especially 'Mama Mia's'. In 2004, all of those bars and restaurants were destroyed in the Tsunami. The pianist at the JW Marriott in Phuket, Stuart Hopkins, who was also a regular at the bar made extensive attempts to contact the cast. In June 2005, a large package arrived for his attention. It was from Renée Zellweger containing many things such as T-shirts, caps, and a big movie poster signed by herself and other cast members. Over the years the bars on the beach were re-built, and the poster still hangs proudly in Mama Mia's bar as of August 2009.
Bridget makes a comment about Mark wearing a wet shirt. Colin Firth made a famous scene playing Mr Darcy in Pride and Prejudice (1995) where he appeared to Elizabeth Bennet in a wet shirt after swimming in a lake.
All of the characters who appeared in the first Bridget Jones movie Bridget Jones's Diary (2001) and who reappeared in this one were played by the same actor or actress with the exception of Mrs. Darcy who was played by Shirley Dixon replacing the late Charmian May who sadly passed away after the release of the first movie and before the making of the second movie commenced.
The poem Daniel quotes to Bridget on the boat while in Thailand is a translation of the famous "Phra Aphai Manee", a famous epic poem about a hero/ prince who, among other things, wooes and marries many princesses. The part he quotes is when Phra Aphai Manee wooes his head wife, Suwan Malee.
Earned $8.7 million in its 530-theater opening weekend, setting the record of the highest-grossing limited release opening weekend. This record was broken seven years later by Mission: Impossible - Ghost Protocol (2011), which earned $12.8 million in its 425-theater debut.