Faires, Matthew ORCID: https://orcid.org/0009-0004-6890-8469, Jones, Gareth, Beeken, Rebecca J., Burke, Trys, Cooper, Cindy, Copeland, Robert J., Guy, Zoe, Hill, Andrew, Hillison, Emily, Hodgson, Phil, Horspool, Michelle, Li, Jinshuo, Machaczek, Katarzyna K., Parrott, Steve, Quirk, Helen, Rombach, Ines, Stubbs, Brendon, Tew, Garry ORCID: https://orcid.org/0000-0002-8610-0613, Traviss-Turner, Gemma, Turton, Emily, Walters, Stephen, Weich, Scott, Wildbore, Ellie and Peckham, Emily (2026) The SPACES feasibility trial: a co-produced physical activity intervention for people with severe mental illness. Mental Health and Physical Activity, 30. p. 100765.