Director Dan Mazer was worried about the two main cast members, Rose Byrne and Rafe Spall, because when they met, they bonded and had great chemistry. But in the movie, the two aren't supposed to.
Rose Byrne plays an Englishwoman, and Simon Baker plays an American. However, they are both Australian.
In real life Rose Byrne was petrified of the doves in the hotel conference room scene. You can see her breaking character whenever a dove comes near her.
The "solvents" factory, used in the film, is actually Meantime Brewing Company's brewery in North Greenwich, London.
During charades, Jason Flemyng's character guesses Dr. Jekyll and Mr. Hyde. He played that character in League of Extraordinary Gentlemen.