Ben Whishaw as Paddington (voice)

Hugh Bonneville as Henry Brown

Sally Hawkins as Mary Brown

Madeleine Harris as Judy Brown

Samuel Joslin as Jonathan Brown

Nicole Kidman as Millicent

Julie Walters as Mrs. Bird

Imelda Staunton as Aunt Lucy (voice)

Peter Capaldi as Reginald Curry

Michael Gambon as Uncle Pastuzo (voice)

Jim Broadbent as Samuel Gruber

Madeleine Worrall as Agatha Clyde

Tim Downie as Montgomery Clyde

Matt King as Andre the Thief

Simon Farnaby as Barry

Kayvan Novak as Grant

Matt Lucas as Joe

Jonathan Derbyshire as Master Gruber

Mary Roscoe as Master Gruber's Aunt

Jude Wright as Tony

Lottie Steer as Young Millicent

Alice Lowe as Geographers' Guild Receptionist

Will Smith as Geographer (Present Day)

Toby Williams as Geographer (Present Day)

Catherine Shepherd as Geographer (Present Day)

Sean Bridgeman as Morgan Clyde

Cleo Sylvestre as Marjorie Clyde

Geoffrey Palmer as Head Geographer

Gus Brown as Second Geographer

Rufus Jones as Third Geographer

Kenneth Hadley as Fourth Geographer

David McKail as Fifth Geographer

James Bachman as Sixth Geographer

Javier Marzan as Buckingham Palace Sentry

Llewella Gideon as Class Teacher

Justin Edwards as Desk Sergeant

Iain Mitchell as Dog Owner

Barry Ashton as Judge

Michael Bond as Kindly Gentleman

Steve Edge as Natural History Museum Security Guard

Steve Oram as Paddington Station Security Guard

Tom Meeten as Paddington Station Security Guard

Hamish McColl as Petting Zoo Keeper

Dominic Coleman as Policeman

Tarik Blake as Pupil

Theresa Watson as Stenographer

Ross Boatman as Trader

Eddie Nestor as Underground Ticket Inspector

George Newton as Angel (uncredited)

Alexander Bracq as Commuter #1 (uncredited)

Ancuta Breaban as Commuter #2 (uncredited)

Faith Elizabeth as Commuter #3 (uncredited)

Barrie Martin as Commuter #4 (uncredited)

Stuart Matthews as Commuter #5 (uncredited)

Fabio Vollono as Commuter #7 (uncredited)

Julie Vollono as Commuter #8 (uncredited)

Matthew David McCarthy as Docker (uncredited)

Denis Khoroshko as Immigrant (uncredited)

Jack Philips as Market Stall Owner (uncredited)

Asim Chaudhry as Security Guard (uncredited)

Nigel Genis as Station Blocker (uncredited)

Jim Lawrence as Trader (uncredited)

Vic Waghorn as Additional Voices (voice) (uncredited)