John Davidson’s Tourette’s Syndrome Advocacy Story Comes to Life in Powerful Drama Starring Robert Aramayo

The real-life story of John Davidson, an activist for Tourette’s syndrome awareness, has been brought to the screen in the 2025 British biographical drama “I Swear,” directed by Kirk Jones and starring Robert Aramayo in the lead role.

The film is based on Davidson’s true life story, which was previously documented in the 1989 BBC television documentary “John’s Not Mad.” Diagnosed with severe Tourette syndrome as a young boy growing up in Galashiels in the Scottish Borders, Davidson faced widespread misunderstanding and prejudice during the 1980s, a time when the neurological condition was poorly understood by the public and medical professionals alike.

As portrayed in “I Swear,” Davidson’s early experiences with involuntary tics and uncontrollable utterances led to disciplinary actions at school, including an incident where a head teacher whipped his hand with a belt after misinterpreting his symptoms as behavioral issues. These challenges nearly derailed his aspiration to become a football player, as a poor performance during a scout’s assessment — influenced by both his injury and tics — disappointed his father and highlighted the lack of support available to children with neurological differences at the time.

Despite these obstacles, Davidson persevered and eventually became a prominent advocate for people with Tourette syndrome. His activism culminated in being honored by Queen Elizabeth II for his contributions to raising awareness and improving understanding of the condition. The film traces this journey from his difficult childhood through his emergence as a public figure committed to fostering empathy and acceptance.

To prepare for the role, Robert Aramayo immersed himself in Davidson’s life, spending time with the real-life subject to authentically portray the physical and vocal tics associated with Tourette syndrome. This dedication contributed to a critically acclaimed performance that earned Aramayo the BAFTA Award for Best Actor in a Leading Role at the 79th British Academy Film Awards, where “I Swear” received five nominations and won two awards in total.

The film premiered at the Toronto International Film Festival on September 7, 2025, before opening in United Kingdom theaters on October 10, 2025, distributed by StudioCanal. With a production budget of approximately £5 million, “I Swear” went on to gross $11.1 million worldwide. Critics praised the film for its sincere portrayal of Davidson’s life, particularly highlighting the performances of Aramayo and Peter Mullan, who played a significant supporting role.

Kirk Jones, who directed, wrote, and produced the film, said he was inspired to revisit Davidson’s story after coming across an old note that simply read “John Davidson, Tourette’s.” He described meeting Davidson as a profound experience, calling him “the sweetest, kindest, gentlest man I’ve probably ever met.” Jones emphasized the importance of telling Davidson’s story with authenticity, especially given the historical lack of respectful representation of people with Tourette syndrome in media.

Davidson himself attended the film’s London gala screening on September 29, 2025, alongside Aramayo. Reflecting on the project, he expressed initial nervousness about how his story would be told, noting that the Tourette community has often been subjected to mockery rather than understanding in film, television, and comedy. However, he affirmed that the collaboration with Jones and the cast resulted in a respectful and truthful depiction of his life.

“I Swear” stands as a significant contribution to both cinema and disability awareness, using the medium of film to illuminate the lived experience of someone with Tourette syndrome while honoring his perseverance and advocacy. By centering Davidson’s voice and journey, the film challenges audiences to move beyond stereotypes and recognize the humanity behind the condition.