Is it more reckless to eat a bacon sandwich everyday or to go skydiving? What's the chance that all children in the same family have exactly the same birthday? Jim Al-Khalili talks to Professor David Spiegelhalter about risk, uncertainty and the real odds behind everyday life.

As one of the world's leading statisticians, he is regularly called upon to help answer questions in high profile inquiries - like the one into the Harold Shipman murders, infant heart surgery at Bristol Royal Infirmary and the PiP breast implant scandal.

Jim finds out more about the Life Scientific of the man who despite winning many awards and his research papers being some of the most cited in his field David Spiegelhalter says he isn't really that good at maths.