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I Swear: a beautiful film with a genius lead performance

Robert Aramayo as John Davidson in I Swear
Robert Aramayo as John Davidson in I Swear
Reviewer score
15A
Director Kirk Jones
Starring Robert Aramayo, Maxine Peake, Shirley Henderson, Peter Mullan, Scott Ellis Watson, Francesco Piacentini-Smith, David Carlyle, Paul Donnelly, Steven Cree

Rings of Power star Robert Aramayo delivers a star-making turn in I Swear, and your cinema year will be the poorer if you don't find the time for it - no matter how much stuff you've sat down to watch in 2025 already.

This gem of a biopic tells the story of Tourette's campaigner John Davidson over 36 years; from the time his symptoms first appeared as a youngster in Scotland to when he was honoured with an MBE in 2019. Along the way, there is shocking heartache and bewilderment but also huge amounts of kindness and humour too. This really is a film where you'll be laughing one minute and feel tears building the next.

John Davidson and Robert Aramayo attend the I Swear London gala screening at Curzon Mayfair on 29 September, 2025
(L-R) John Davidson and Robert Aramayo at the gala screening of I Swear in London in September

It's written and directed by Waking Ned and Nanny McPhee director Kirk Jones, who proves to have the perfect eye and ear for bringing Davidson's life to the screen in all its tough and tender truth. Behind the lens, the former TV ad man has made his best film, almost 30 years into his feature career.

John (Robert Aramayo) hugs Dottie (Maxine Peake) in I Swear
Robert Aramayo as John and Maxine Peake as Dottie - This really is a film where you'll be laughing one minute and feel tears building the next

And in front of the camera, Jones has struck gold in his casting of Aramayo, an actor so determined to do justice to Davidson that he moved to his native Galashiels before filming began. Aramayo's work here is worthy of an Oscar nomination, but that seems like a long shot. However, the Yorkshireman has to be a serious contender for the BAFTA for Lead Actor in his native UK. Co-stars Maxine Peake, Shirley Henderson, and Peter Mullan, playing Davidson's shining light, mother, and boss, respectively; all deserve recognition also.

Tommy (Peter Mullan) explains the Community Centre job to John (Robert Aramayo) in I Swear
Tommy (Peter Mullan) explains the job to John (Robert Aramayo) - and doesn't bat an eyelid when the interview veers wildly off course

If you love, say, Local Hero, Billy Eliot, or Looking for Eric, I Swear deserves its place in their company. Just like them, you'll be watching this one again. (PS: If you're thinking about bringing an elderly relative, the language is something else.)