Searxng/Heartstopper Forever movi TV Heartstopper movie casts Anna Maxwell Martin as Nick's mum, replacing Olivia Colman. See the full cast for the 2026 feature film finale. April 18, 2026 AceShowbiz - The eagerly awaited Heartstopper movie is set to debut, but fans will notice a significant casting change for a key character. Netflix confirmed on Friday, April 17, that the film will feature returning stars Kit Connor and Joe Locke, alongside Yasmin Finney, Will Gao, Corinna Brown, Kizzy Edgell, Tobie Donovan, Rhea Norwood, and others.