I Swear

I blink. I twitch. I jump. I click. I whistle. I shout.

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.

Robert Aramayo

(John Davidson)

Peter Mullan

(Tommy Trotter)

Maxine Peake

(Dottie Achenbach)

Shirley Henderson

(Heather Davidson)

Scott Ellis Watson

(Young John Davidson)

Paul Donnelly

(Billy Dean)

Douglas Rankine

(Doctor Colin Hargreaves)

Adam McNamara

(PC / Inspector MacCullen)

Louise Stewart

(Caroline)

Chris Dixon

(James)

David Carlyle

(Chris Achenbach)

Steven Cree

(David Davidson)

Anthony Capaldi

(Andy)

Andrea Bisset

(Lucy)

Francesco Piacentini-Smith

(Murray)

Gordon Peaston

(Councillor Spalding)

Christina Modestou

(Alison)

Isla Mercer

(Young Caroline)

Andrew McPhail

(James' friend)

Malcolm McFadyen

(Police Officer)

Catriona McArthur

(Sharon Davidson)

Jamie McAllister

(Young Murray)

Leah MacRae

(Mrs Robinson)

Jamie Marie Leary

(Irene)

Amber Sylvia Edwards

(Marie)

Paul Cassidy

(Allan)

Christina Ashford

(Queen Elizabeth II)

Gary French

(Procurator Fiscal)

Thierry Mabonga

(Defence Agent)

Ruth Milne

(Karen)

Donald Morrison

(Priest)

Gordon Morris

(Queen's Speaker)

Jason Alan Staines

(Doctor)

Cerys Tinney

(Girl)

Paddy Towers

(Lad 1)

Kendal Sheridan McKinlay

(Barmaid)

Ellie Macdowall

(Girl)

Sanjeev Kohli

(Shopkeeper)

Emma Hartley-Miller

(Woman on Train)

Michael Dylan

(Butler)

Calum Cormack

(Bouncer)

Michael Cooke

(Journalist)

Johnny Milne

(Johnny Milne)

Alan Morton

(Alan Morton)

Frankie Morton

(Frankie Morton)

Paul Stevenson

(Paul Stevenson)

Karen Barke

Johnny Austin

(Journalist)

Somerled Campbell

(Palace Official)

Simon Charnley

(Police Officer)

Ron Donachie

(Headmaster)

David Gallacher

(Police Officer)

Holly Howden Gilchrist

(Suzie)

Gregor Mackay

(Danny)

Ross Mann

(Journalist)

John Mclarnon

(Police Officer)

Taqi Nazeer

(Gerry)

Abid Nazir

(Teacher)

Connor Parkin

(Roddy)

Ella Victoria Robb

(English Teacher)

Carolina Valdés

(Barbara)

Cameron McSwan

(Football Kid (uncredited))

Finlay Phillips

(Schoolboy (uncredited))