Dame Prudence Margaret Leith, DBE (born 18 February 1940) is a South African restaurateur, chef, caterer, television presenter/broadcaster, journalist, cookery writer and novelist. She is Chancellor of Queen Margaret University, Edinburgh. She was a judge on BBC Two's Great British Menu for eleven years, before joining The Great British Bake Off in March 2017, replacing Mary Berry, when the television programme moved to Channel 4.