Taron Egerton
Gary 'Eggsy' Unwin

Colin Firth
Harry Hart / Galahad

Samuel L. Jackson
Valentine

Mark Strong
Merlin

Sophie Cookson
Roxy

Sofia Boutella
Gazelle

Michael Caine
Arthur

Edward Holcroft
Charlie

Hanna Alström
Princess Tilde

Samantha Womack
Michelle Unwin

Mark Hamill
Professor Arnold

Jonno Davies
Lee

Jack Davenport
Lancelot

Adrian Quinton
Terrorist

Alex Nikolov
Little Eggsy

Velibor Topic
Big Goon

Geoff Bell
Dean

Jordan Long
Poodle

Theo Barklem-Biggs
Ryan

Tobi Bakare
Jamal

Morgan Watkins
Rottweiler

Paul Kennington
Barman

Ralph Ineson
Policeman

Nicholas Banks
Digby

Jack Cutmore-Scott
Rufus

Nicholas Agnew
Nathaniel

Rowan Polonski
Piers

Tom Prior
Hugo

Fiona Hampton
Amelia

Bjørn Floberg
Scandinavian Prime Minister

Johanna Taylor
Valentine's Assistant 1

Lily Travers
Lady Sophie

Richard Brake
The Interrogator

Andrew Bridgmont
Kingsman Tailor

Corey Johnson
Church Leader

Anne Wittman
Church Blonde Woman

Andrei Lenart
Arctic Guard

Sarah Hewson
Sky News Reader

Jayne Secker
Sky News Reader

Carlos Peres
Kingsman Knight

Jude Poyer
Church Goer (uncredited)

Daniel Chapple
Business Elite (uncredited)