It is an unlikely TV format to have spawned four series and a dozen international versions, but The Great British Bake Off has proved a remarkable success with viewers since it began in 2010. Its few winners have each published a book (or two), written baking columns and made television appearances. The series" first winner Edd Kimber and last year's champion John Whaite have gone on to work in pastry kitchens, while 2011 winner Joanne Wheatley runs an AGA baking cooking course from her home in Essex. The twee, often tongue-in-cheek show has attracted record viewing figures this year, and will soon be moving to BBC One, where it will not doubt continue to produce a fresh batch of baking boffins for a few more years to come.