I Swear

Item: I Swear
Rating: 4
Author: Reel Dialogue

More than the tics

4/5

Biographical, Caring for others, Disabilities, Family

11 Mar 2026

Michael Walsh

John Davidson became known in Britain after the landmark 1989 BBC documentary John’s Not Mad, which introduced audiences to a young Scottish man navigating life with severe Tourette syndrome. Over the decades Davidson transformed his personal struggle into advocacy, speaking in schools, working with researchers, and campaigning for public awareness about the neurological condition. His story, full of awkward, painful, and unexpectedly funny moments, serves as the focal point of director Kirk Jones’ biographical drama I Swear. But the film isn’t simply a disability biopic but a portrait of dignity forged through misunderstanding and resilience.

Set primarily between the 1980s and the present, I Swear follows John Davidson (Robert Aramayo) growing up in Galashiels in the Scottish Borders. As a teenager, his dreams of playing football begin to unravel when he develops uncontrollable tics and vocal outbursts associated with Tourette syndrome. Misunderstood by teachers, embarrassed in public, and strained within his own family, John struggles to find a place where he can belong. As an adult he gradually discovers that the greatest challenge is not Tourette’s itself but society’s ignorance of it. Through friendships, work, and advocacy, John begins educating communities about the condition and eventually becomes a respected public campaigner, even receiving an MBE for his efforts.

Director and writer Kirk Jones keeps the tone remarkably balanced. There are moments of deep pain, bullying, family tension, and social rejection, but they are frequently punctuated by surprising humour. Tourette’s itself is portrayed honestly: not as a gimmick but as an involuntary neurological condition that shapes interactions with the world. The film repeatedly reminds us that the real problem is not John’s tics but society’s response to them. The resulting film is both moving and quietly disarming, entertaining and teaching the audience without preaching unbridled acceptance or sanitising the condition.

But what really elevates I Swear beyond a standard biographical drama is the extraordinary performance at its centre. Robert Aramayo delivers a deeply embodied portrayal of John Davidson, capturing the unpredictability of Tourette’s without reducing the character to the condition. His performance walks a delicate line that is never caricature nor pure sentimentality, and it’s easy to see why it earned him the BAFTA win for Best Actor.

The supporting cast further strengthens the film’s emotional grounding. Maxine Peake brings warmth and steadiness to Dottie, a nurse who offers John compassion when others only see disruption, and Peter Mullan’s Tommy adds earthy humour and humanity. In a more heartbreaking turn, Shirley Henderson portrays John’s mother Heather with the messy realism of someone trying, and sadly failing, to understand what her son is experiencing.

Overall, I Swear is a heartfelt and humorous biopic that humanises a difficult condition and generates both empathy and education about Tourette’s, with a fantastic cast and a warm, witty script.

Reel Dialogue: Compassion for the Outcast

One of the gifts of cinema is its ability to give us windows into experiences we would otherwise never encounter. I Swear functions exactly that way. For many viewers, Tourette syndrome is still largely misunderstood, often reduced to the stereotype of involuntary swearing. The film patiently dismantles that caricature. It shows Tourette’s as a complex neurological condition involving uncontrollable movements and sounds that the sufferer cannot simply “turn off.”

This raises an important question for Christian viewers: how do we respond to people whose behaviour unsettles us? Throughout the Gospels, Jesus consistently moves toward those who were misunderstood or socially excluded: the leper, the demon-possessed man, the woman bleeding for twelve years, etc., but their conditions didn’t define their worth. I Swear invites us into a similar posture of compassion.

John’s greatest breakthroughs come not when his symptoms disappear, but when people choose understanding over judgment. The film suggests that awareness can transform a hostile environment into a hospitable one. In an often impatient society, Christians have a unique opportunity to model this kind of grace. Compassion begins with listening, learning, and refusing to reduce a person to their struggle. If anything, I Swear reminds us that every person carries a story, and the most Christlike response is simply choosing to see them in full, how God sees them, not in part as the world does.

Bible References

Mark 1:40-41 “A man with leprosy came to him and begged him on his knees, “If you are willing, you can make me clean.” Jesus was filled with compassion. He reached out his hand and touched the man. “I am willing,” he said. “Be clean!”

About Michael Walsh

Michael Walsh is an avid film fan, missions mobiliser and graduate of Sydney Missionary and Bible College (SMBC). Growing up constantly either renting movies from the local video store, or buying movies with his pocket money to add to his collection, his love of film is surpassed only by his love of God, and his desire to make the Gospel known to all the ends of the earth.