Season 10 2012

Sixty-two-year-old David King is one of the world's most successful international musical theatre producers, with hit shows around the globe, and the biggest employer of dancers in Europe. David has an estimated fortune of over £20 million from making his own versions of successful shows. He's known for his ruthless no-nonsense approach, but nothing could prepare him for the shocking event that takes place on The Secret Millionaire. Based in Monaco, David shares his luxurious lifestyle with his 30-year-old ex-chorus line dancer girlfriend, but life wasn't always like this; before David hit the big time he ran a small jewellery business, took too many risks, got on the wrong side of the law and lost everything, including his wife and family. His wheeler-dealer attitude put a strain on his relationship with his disapproving father, who passed away before he could see David turn his life around and become a success.

Matthew Newbury, a property developer who lost his leg in a motorcycle accident at the age of 15, goes undercover in Manchester to find disability charities to donate some of his £9million fortune to. During his time working with the organisations, Matt swaps his £50,000 bionic limb for a standard-issue NHS model, which causes him pain throughout the week.

Arfan Razak runs one of the most successful Indian restaurants in the country. He goes undercover in Oxford, where a quarter of the population suffer significant financial hardship. The experience leads him to question his family priorities.

Millionaire Carol Hayes is a London-based agent representing celebrities such as Gok Wan and Arlene Phillips. But Carol leaves the glamour of showbiz behind when she travels to East Glasgow's desolate Easterhouse Estate, one of the most deprived areas in the UK, where life expectancy is just 54 in some places.

Carol finds charities she really cares about, and she throws herself into volunteering for organisations that help local kids and people with early stage dementia. The people she meets help the tough businesswoman get in touch with her softer side.

Damage to Bobby Dudani's Computer Exchange shops in the 2011 riots cost him hundreds of thousands of pounds. Bobby visits Croydon, which was hard hit by the riots, to find people to help.

Philip Johnston was given up for adoption when he was six weeks old. He goes undercover in Swansea, where there's been a 55% increase in the number of children taken into care in 10 years.