Trivia: There is an additional scene about two minutes into the end credits.
Trivia: Eggsy needs the code for the prison door that holds Princess Tilde. The code given is "2625." This spells out the word "anal" on a telephone keypad.
Trivia: Colin Firth did 80 per cent of his own stunts in this film.
Trivia: When Harry Hart is showing Eggsy the weapons of the Kingsmen, and shows Eggsy the knives in the shoes, Harry Hart says, "They used to have a phone in them, in the old days." This is a reference to the Get Smart TV show.