Jon Snow reveals Alzheimer’s diagnosis in Channel 4 documentary

Jon Snow will put his Alzheimer’s diagnosis at the center of a new Channel 4 documentary, offering a rare public account of how the disease alters work, family life and identity before the most advanced stages. The film, Jon Snow: A Last Big Story, is produced by Basement Films and is scheduled to air on Saturday, 20 June 2026 at 8pm.

Snow, 79, presented Channel 4 News from 1989 to 2021 and became one of British television’s most recognisable broadcasters over three decades. He announced his retirement on 29 April 2021, and his final programme aired on 23 December 2021. Reports say he was diagnosed in 2023 and has been living with Alzheimer’s since then.

The documentary is expected to show the reality of that diagnosis in everyday life, including the uncertainty that can come with early-stage dementia. Snow has said he sometimes doubts whether he has Alzheimer’s and that he does not feel disabled. He has also acknowledged wanting to hide the condition because of the stigma attached to mental decline, a reluctance that mirrors the experience of many families who delay talking openly about memory loss, testing and care.

That public silence carries consequences well beyond one household. The Alzheimer’s Society says dementia affects around one million people in the UK and describes it as the country’s biggest killer. Michelle Dyson, the charity’s chief executive, said Snow’s decision to speak publicly is “a real act of courage” and said his story will resonate with many people confronting the disease in their own families. Snow has also said he took part in a clinical trial for the condition, underscoring how diagnosis can connect patients to research as well as treatment.

Snow’s personal history adds another layer to the film. He has previously spoken about his mother, Joan, who struggled with Alzheimer’s before her death. The documentary is also said to follow him investigating a mining disaster in Zambia, giving the film a journalistic thread that ties his current condition to the reporting style that defined his career. Louisa Compton, Channel 4’s head of news, current affairs, specialist factual and sport, said it was a privilege to document his “last big investigation” and said the film would sensitively frame Snow’s current affairs instincts alongside a new life lived with Alzheimer’s.

For families facing a diagnosis, the significance of a figure like Snow speaking plainly is practical as well as symbolic. Early-stage Alzheimer’s is often the moment when planning matters most: families weigh medical follow-up, legal and financial decisions, and the support needed to keep people connected for as long as possible. Snow’s disclosure places those questions in the national conversation, where they belong.