Kirk Jones’s terrifically warm, generous film is about real-life activist John Davidson, who is from Galashiels in the Scottish Borders and has Tourette syndrome, with its tics, compulsive behaviour patterns and random obscene shouts. He was awarded an MBE in 2019 for his work educating the nation about the condition. I Swear contains a great performance from Robert Aramayo, full of intelligence and charm. This is an absorbing, compassionate film. 
The Guardian