


10/10/25
Cineworld, Edinburgh
I Swear follows a tried and tested feel-good formula. You know the one: a vulnerable protagonist struggles to live with a misunderstood condition until their saviour arrives in the shape of a kind and unassuming friend, allowing them to flourish. So far, so seen-it-all-before. But writer-director Kirk Jones gives the format a kick in the baws with this tale of grit and humour in the face of great adversity.
The film is elevated by two things: an extraordinary true-life story and a stellar cast. The central character is John Davidson, an MBE-decorated Scottish activist, who lives with Tourette syndrome and campaigns to raise public awareness. Played here by Scott Ellis Watson (as a teenager) and Robert Aramayo (as an adult), he lights up the screen, his frustration and sadness leavened by his innate sweetness – and the undeniable funniness of his inappropriate comments and sweary outbursts. “I’m a paedophile,” he says at a caretaking job interview, when informed that the role includes setting up a hall for youth groups to use. The same prospective employer asks him about his tea-making skills. “I’m good,” John assures him, “I use spunk for milk.”
Despite the jocularity, Jones’ screenplay never mocks John, never laughs at him or belittles what he has to deal with every day. Instead, it’s an honest account of a young man floundering in a hostile world, rescued from despair by finding acceptance. John’s protector is his pal’s mum, Dottie (Maxine Peake), a mental health nurse with a terminal cancer diagnosis, who takes John in. While his own mum, Heather (Shirley Henderson), is uptight and puritanical, embarrassed by his language, making him sit apart from the family to eat because of his tendency to spit, Dottie ignores his tics and profanity, welcoming him at her kitchen table, telling him not to apologise for things he can’t help. She encourages him to see a future for himself: one where he can hold down a job and live independently.
Another positive influence in John’s life is his janitor boss, Tommy (Peter Mullan), who champions his young assistant, serving as both mentor and father figure. It’s Tommy who tells John he needs to raise awareness of his syndrome: “The problem isn’t Tourette’s; it’s people not knowing about Tourette’s.” It’s Tommy who stands up for John in court, when the judge seems ready to penalise him for contempt, unable to accept that his shouting is involuntary.
At the end of the movie, we see the real-life John, a familiar figure to those of us old enough to remember the 1989 BBC documentary, John’s Not Mad, which featured the sixteen-year-old Davidson. I’m a little confused as to why this influential TV programme is never mentioned in the film, as it must have made him something of a local celebrity and changed the way he was perceived. Still, he’s been spreading the word ever since, organising conventions, giving presentations to school kids and police officers, making sure that everyone knows about Tourette syndrome. We’ve no excuse for condemning those living with it to the years of misery John himself endured.
Engaging, enraging and hilarious, I Swear is something of a triumph.
As John himself might say, “Fuck off to the cinema and watch it, ya wankers.”
4.3 stars
Susan Singfield






