Partly inspired by Royal Ballet dancer Philip Marsden whom writer Lee Hall met while researching the script. Marsden is from the North of England, and his family had a militant mining background.
Originally titled "Dancer".
Jamie Bell took ballet and other dance classes while in secondary school, which caused him to often be ridiculed by his peers. He used some of these experiences as inspiration while playing Billy Elliot.
The ballet that Billy performs in in the final scene is Mathew Bourne's version of "Swan Lake" where all the Swans are played by men. Billy plays the part of the Swan, the same part he discusses with Mrs Wilkinson earlier in the film.
One of the great qualms of the entire film was whether Mrs. Wilkinson should be there in the final scene, where the older Billy Elliot performs Swan Lake. Eventually, it came down to the fact that 'Julie Walters' wasn't available for filming.
Billy Elliot's original title was 'Dancer', but when they took the film to the Cannes Film Festival, there was another film called Dancer in the Dark (2000), which won the Palmes D'Or, prompting confusion; indeed, Universal Studios called the directors, producers and writer up and congratulated them. They then realized they had to change the name and settled ('rather lamely', joked the writer) on 'Billy Elliot'.
The musical version of the film, which hit the West End in 2005 to rave reviews and numerous awards and nominations, reportedly cost £5.5 million to make: around £3 million more than the film version.