The lineup of 19 contestants reportedly includes Stephen Fry, presenter Jonathan Ross, Charlotte Church, Good Morning Britain host Kate Garraway, Olympic diver Tom Daley, comedian Alan Carr, and Ted Lasso star Nick Mohammed.
Other participants include actors Celia Imrie, Tameka Empson, Ruth Codd and Mark Bonnar, singers Paloma Faith and Cat Burns, comedians Joe Wilkinson and Lucy Beaumont, sports broadcaster Clare Balding, rugby player Joe Marler, historian David Olusoga, and YouTuber Niko Omilana.