I Swear
April 24, 2026
Overview
Diagnosed with Tourette Syndrome at 15, John Davidson navigates his way against the odds through troubled teenage years and into adulthood, finding inspiration in the kindness of others to discover his true purpose in life.
Cast and crew
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Kirk Jones
Director
Robert Aramayo
John Davidson
Peter Mullan
Tommy Trotter
Maxine Peake
Dottie Achenbach
Shirley Henderson
Heather Davidson
SEW
Scott Ellis Watson
Young John Davidson
Paul Donnelly
Billy Dean
Douglas Rankine
Doctor Colin Hargreaves
Adam McNamara
PC
Louise Stewart
Caroline
CD
Chris Dixon
James
DC
David Carlyle
Chris Achenbach
Steven Cree
David Davidson
AC
Anthony Capaldi
Andy
AB
Andrea Bisset
Lucy
Francesco Piacentini-Smith
Murray
Gordon Peaston
Councillor Spalding
CM
Christina Modestou
Alison
IM
Isla Mercer
Young Caroline
AM
Andrew McPhail
James' friend
MM
Malcolm McFadyen
Police Officer
CM
Catriona McArthur
Sharon Davidson
JM
Jamie McAllister
Young Murray
Leah MacRae
Mrs Robinson
Jamie Marie Leary
Irene
ASE
Amber Sylvia Edwards
Marie
Paul Cassidy
Allan
CA
Christina Ashford
Queen Elizabeth II
GF
Gary French
Procurator Fiscal
Thierry Mabonga
Defence Agent
RM
Ruth Milne
Karen
DM
Donald Morrison
Priest
Gordon Morris
Queen's Speaker
JAS
Jason Alan Staines
Doctor
CT
Cerys Tinney
Girl
PT
Paddy Towers
Lad 1
KSM
Kendal Sheridan McKinlay
Barmaid
EM
Ellie Macdowall
Girl
Sanjeev Kohli
Shopkeeper
EH
Emma Hartley-Miller
Woman on Train
MD
Michael Dylan
Butler
CC
Calum Cormack
Bouncer
Michael Cooke
Journalist
JM
Johnny Milne
Johnny Milne
AM
Alan Morton
Alan Morton
FM
Frankie Morton
Frankie Morton
PS
Paul Stevenson
Paul Stevenson
KB
Karen Barke
JA
Johnny Austin
Journalist
SC
Somerled Campbell
Palace Official
SC
Simon Charnley
Police Officer
Ron Donachie
Headmaster
DG
David Gallacher
Police Officer
Holly Howden Gilchrist
Suzie
GM
Gregor Mackay
Danny
RM
Ross Mann
Journalist
JM
John Mclarnon
Police Officer
TN
Taqi Nazeer
Gerry
AN
Abid Nazir
Teacher
CP
Connor Parkin
Roddy
EVR
Ella Victoria Robb
English Teacher
Carolina Valdés
Barbara
CM
Cameron McSwan
Football Kid (uncredited)
FP
Finlay Phillips
Schoolboy (uncredited)