I Swear: Release date news, cast details, and more about the upcoming British drama by Kirk Jones

I Swear is an upcoming British drama film that follows the inspiring true-life story of Tourette’s Syndrome campaigner John Davidson. It is written, directed, and co-produced by Kirk Jones (Waking Ned, Nanny McPhee).

The film marks Jones’ return to directorial duties after 2016’s My Big Fat Greek Wedding 2. Before that, Jones had directed What to Expect When You’re Expecting (2012) and Everybody’s Fine (2009), with a cast of Hollywood stars such as Robert De Niro, Drew Barrymore, Cameron Diaz, and Jennifer Lopez, among others.

Apart from Kirk Jones, the film is produced by Georgia Bayliff and Piers Tempest for One Story High and Tempo Productions. The central cast includes Robert Aramayo (who plays Davidson), Shirley Henderson, Maxine Peake, and Peter Mullan. The film will release in UK theaters on October 10, 2025.

What is I Swear about? Here's what we know about this British drama film

The film’s distributor, StudioCanal UK, released an official trailer on July 10, 2025. It offers a heartwarming look into John Davidson’s life as an adolescent discovering the symptoms of his neurological condition, which caused him a lot of trouble as a kid. Then, the trailer follows him as an adult, leading a happier life, backed by his peers’ kindness and support.

The official plot synopsis reads:

"Diagnosed with Tourette’s at age 15, John Davidson faced and overcame many hardships from adolescence and early adulthood as a result of what was a little-known and entirely misunderstood condition in 1980s Britain. I SWEAR is a funny, heartfelt, and moving account of John’s experiences."

Does Kirk Jones' I Swear have a release date?

Yes, as earlier revealed, the film is set to be released in cinemas on October 10, 2025. Filming reportedly took place between June and August 2024 in Glasgow, Scotland.

In a previous statement, the producing team of Jones, Bayliff, and Tempest spoke in detail about their perspective behind this project. They also shared how the cast and crew played a part in bringing their vision to life.

“It has been a pleasure and an honour to bring to life the story of John Davidson MBE. John lived with Tourette’s at a time when it was misunderstood, and he has spent his life trying to make sure those diagnosed today do not have to go through what he went through."

It further read:

”Robert Aramayo could not have prepared or committed any more to the role and delivers a breathtaking performance, spending months with John, in Galashiels. The team were determined to serve the story and deliver a film that captured the humour, emotion, and drama of living with Tourette’s. This unique project has been a privilege to work on for all the crew, cast, and production.”

What does John Davidson say about the film?

John Davidson served as an executive producer on this film. In a previous statement, he said:

“Working on this project has been absolutely mind-blowing. The cast and crew have been 100% committed and respectful of my condition, and spending time with Kirk and Rob has been an amazing experience, even if sometimes emotional. This film is about my experience living with Tourette’s Syndrome, and I only pray that it brings more understanding and acceptance for those living with Tourette’s and allows them to go on and fulfil their dreams.”

What do we know about the I Swear cast?

A still from I Swear, the British film (Image via YouTube/StudioCanal UK)

Robert Aramayo (The Rings of Power, Behind Her Eyes) stars in the leading role of John Davidson. Scott Ellis Watson stars as John in his teenage years.

The rest of the cast of I Swear includes: