I Swear
September 22, 2025
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
Maxine Peake
Dottie Achenbach
Shirley Henderson
Heather Davidson
Peter Mullan
Tommy Trotter
SEW
Scott Ellis Watson
Young John Davidson
Sanjeev Kohli
Shopkeeper
Ron Donachie
Headmaster
Steven Cree
David Davidson
Paul Donnelly
Billy Dean
Douglas Rankine
Doctor Colin Hargreaves
Adam McNamara
PC
DC
David Carlyle
Chris Achenbach
AC
Anthony Capaldi
Andy
AB
Andrea Bisset
Lucy
Francesco Piacentini-Smith
Murray
Louise Stewart
Caroline
Leah MacRae
Mrs Robinson
CM
Christina Modestou
Alison
CM
Catriona McArthur
Sharon Davidson
IM
Isla Mercer
Young Caroline
JM
Jamie McAllister
Young Murray
Jamie Marie Leary
Irene
ASE
Amber Sylvia Edwards
Marie
Paul Cassidy
Allan
GF
Gary French
Procurator Fiscal
Thierry Mabonga
Defence Agent
Gordon Peaston
Councillor Spalding
RM
Ruth Milne
Karen
Carolina Valdés
Barbara
EH
Emma Hartley-Miller
Woman on Train
GS
Greg Storey
Self
PS
Paul Stevenson
Self
CD
Chris Dixon
James
AM
Andrew McPhail
James' friend
MM
Malcolm McFadyen
Police Officer
CA
Christina Ashford
Queen Elizabeth II
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
MD
Michael Dylan
Butler
CC
Calum Cormack
Bouncer
Michael Cooke
Journalist
JM
Johnny Milne
Self
AM
Alan Morton
Self
FM
Frankie Morton
Self
KB
Karen Barke
JA
Johnny Austin
Journalist
SC
Simon Charnley
Police Officer
RM
Ross Mann
Journalist
CP
Connor Parkin
Roddy