In 2015 Michael Sheen competed in a celebrity edition of The Great British Bake Off for the BBC charity fundraiser Comic Relief. See The Great Comic Relief Bake Off 2015.
Michael appeared remotely on this final show in which one of the four star bakers from the series was declared overall winner.
Note: please don’t try to call the number on the screen, you can donate at the Comic Relief website.
Direct link to video file (many thanks to Bake Off Sheen)