Ben Shephard hosts Tipping Point: Lucky Stars, the quiz in which three celebrities take on a magnificent machine in the hope of winning £20,000 for charity. This week MasterChef's Gregg Wallace, comedian Chris Ramsey and media star Vogue Williams each put their wits to the test to discover if any of them have what it takes to master the machine.

Ben Shephard invites Newsnight presenter Kirsty Wark, actor/comedian Miles Jupp and TV personality Kerry Katona to take part in a special edition of the quiz show. Contestants answer questions to win turns on an arcade-style machine. Dropping tokens down a choice of four chutes, they hope to knock piles of them off a moving shelf - and the more they collect, the better their chances of collecting the £20,000 prize for their selected charity.