Cast

• Taron Egerton — Gary 'Eggsy' Unwin
• Colin Firth — Harry Hart / Galahad
• Samuel L. Jackson — Richmond Valentine
• Mark Strong — Hamish Mycroft / Merlin
• Sofia Boutella — Gazelle
• Michael Caine — Chester King / Arthur
• Sophie Cookson — Roxanne 'Roxy' Morton / Lancelot
• Mark Hamill — Professor James Arnold
• Jack Davenport — James Spencer / Lancelot
• Tobi Bakare — Jamal
• Nicholas Banks — Digby Barker
• Edward Holcroft — Charles 'Charlie' Hesketh
• Theo Barklem-Biggs — Ryan
• Jack Cutmore-Scott — Rufus
• Nicholas Agnew — Nathaniel
• Samantha Womack — Michelle Unwin
• Fiona Hampton — Amelia
• Lily Travers — Lady Sophie
• Jordan Long — Poodle
• Richard Brake — The Interrogator
• Simon Green — Valentine's Butler
• Geoff Bell — Dean Baker
• Corey Johnson — Church Leader
• Velibor Topic — Big Goon
• Andrew Bridgmont — Kingsman Tailor
• Rowan Polonski — Piers
• Ralph Ineson — Policeman
• Morgan Watkins — Rottweiler
• James Clayton — Kingsman Knight
• Hanna Alström — Princess Tilde
• Bjørn Floberg — Prime Minister Morten Lindström