Continuity mistake: In the scene when Galahad is taking Eggsy below ground at the Kingsman Tailor Shop, they enter the dressing room and the door is open with it still open in the mirror in the next shot. Then when they go below ground it is magically closed.
Kingsman: The Secret Service (2014)
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Directed by: Matthew Vaughn
Starring: Samuel L. Jackson, Colin Firth, Mark Hamill, Taron Egerton
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More mistakes in Kingsman: The Secret Service
Harry Hart: Manners maketh man. Do you know what that means? Then let me teach you a lesson.
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.
Question: Harry told Dean he had enough information on him to have him locked up for life. What information was this?
Answer: CCTV surveillance and such like. And a possible kingsman informant embedded in the gang leaking incriminating info. Or police informer who reports to kingsman. Or, y'know, he was lying.
Answer: Details aren't given, but it seems that Dean is involved in local crime along with the gang that hangs around with him. Even if Harry is bluffing, and doesn't have specific proof, it is clear that he is abusive and he has the recording of him threatening Eggsy.