Will Ferrell
Sherlock Holmes
John C. Reilly
Dr. John Watson
Rebecca Hall
Dr. Grace Hart
Kelly Macdonald
Mrs. Martha Hudson
Rob Brydon
Inspector Lestrade
Lauren Lapkus
Millie
Pam Ferris
Queen Victoria
Ralph Fiennes
Prof. James Moriarty / Jacob Musgrave
Adam Scherr
Brawn
Kieran O'Brien
PC Smalls
Noah Jupe
Doxy
Bella Ramsey
Flotsam
Scarlet Grace
Pickle
Billy Jenkins
Mud Fog
Michael Culkin
The Judge
Wolf Roth
Sigmund Freud
Jana Pérez
Lestrade's Wife
Paul Cassidy
Charlie Chaplin
Bronson Webb
Jonathan Nightingale
Jason Thorpe
Butler
Robert Cawsey
Waiter
Oliver Maltman
Telegraph Operator
David Stoller
Hudson's Guard
Lilly Aspell
Newschild
Ethan Rouse
Newschild
Jamie Baughan
Titanic Ship Officer Liaison
Jess Liaudin
Hangman
Daniel Fearn
Drooling Man Companion
Martin Bishop
Priest
Gerard Monaco
Titanic Ship Officer
Ben Lee
Houdini
Michael Buffer
Fight Fan #1
Bruce Buffer
Fight Fan #2
Russell Wilcox
Announcer
Billy Zane
Billy Zane
Hector Bateman-Harden
Young Sherlock Holmes
Codie-Lei Eastick
Young Watson
Laura Stevely
Sherlock's Mother
Sadie Newman
Jane
Ella Bright
Bridgette
Paul Bigley
Teacher #1
Sue Maund
Teacher #2
Tommy Gene Surridge
Inky Hands
Paddy Holland
Tough Kid
Deepak Anand
Nobleman (uncredited)
Martin Bassindale
One Man Band (uncredited)
Sara Beasley
Mrs. Frobisher (uncredited)
Steve Coogan
Gustav (uncredited)
Paul T.T. Easter
John (uncredited)
James Eeles
Manager Mr. Petrucka (uncredited)
Karl Farrer
Russian Merchant (uncredited)
Phil Hodges
Mr. Algernon Barkworth (uncredited)
Hugh Laurie
Mycroft Holmes (uncredited)
Jordan Long
Herbert (uncredited)
Jorge Leon Martinez
British Soldier (uncredited)
Martyn Mayger
Buckingham Palace Guest (uncredited)
Lochlan White
Newsie Kid - Timmy (uncredited)
Riley White
Newsie Kid - Jimmy (uncredited)
Colby Mulgrew
Haybag
Nathan Osgood
Mark Twain
David Shackleton
Albert Einstein
Jamie-Rose Monk
Mrs. Nightingale
Stanley Eldridge
Waiter
Jack Riley
Newschild
Ellie Rose Eames
Newschild
Helen Duff
Titanic Guest
Wesley Kent-Hargreaves
Weird Child Companion
Darren Lake
Disorientated Man Companion
Layla Rose Boyce
Nicotine Stains / Nancy
Harry Baxendale
Seamus
Kenneth Hadley
Headmaster
Henrihs Ahmadejevs
Drunk (uncredited)
Lindy Barrett
School Girl (uncredited)
Willem Dalby
Newsie Man (uncredited)
Matthew Di Liello
Telly-Phone Assistant (uncredited)
Shawn Dixon
Upper Class Gentleman #1 (uncredited)
David Handley
Executioner (uncredited)
John Kinory
Instructing Solicitor (uncredited)
Craig Thomas Lambert
Yeoman of the guard (uncredited)
Benjamin Lok
Courtroom Person 3 (uncredited)
Joseph Macnab
Fitness Instructor (uncredited)
Hugh O'Brien
Garden Party Guest (uncredited)
Amelia O'Loughlin
White Star-Line Girl (uncredited)
Anthony Richard Rowe
Victorian Gentleman (uncredited)
Pete Freerunner Simpson
Police Officer (uncredited)
Sonnyboy Skelton
Doxy's Dad (uncredited)
Mick Slaney
Docker (uncredited)
Samantha Sharon Watson
Elizabeth - Lady of the Night (uncredited)
