On tonight's show, father and son Jeff, 58 from Jersey and Danny, 29 from Rugby are hoping their shared love of competing, quizzes and education teamed with their steely determination to win, will help them walk away with the jackpot.

Competing against them are friends Debbie, 53 and Ruth, 46 from Leicestershire. The pair first met 23 years ago and have been best friends ever since. They admit to knowing each other inside out and are confident that mutual love of problem solving, will help them walk away with the top prize.

This week, sisters Soraya and Sonya face husband and wife Geoff and Lyn. They're competing for up to £25,000 but only one team can leave with the money.