Ben Shephard is back with a new series of Tipping Point: Lucky Stars, the quiz show where three celebrities take on an extraordinary machine in the hope of winning £20,000 for charity.

This week singing superstar Melanie C, X Factor judge Louis Walsh and Strictly favourite Anton Du Beke will each need quick wits and nerves of steel if they're to capture the prize.

This week rapper and TV personality Professor Green, Coronation Street actress Sair Khan and Storage Hunter's Sean Kelly will need to keep cool under pressure if they're to master the machine.