Dr Sabrina Cohen-Hatton is the Chief Fire Officer for West Sussex Fire and Rescue Service. She is one of the most senior women in the Fire and Rescue Service in the UK. After spending some time living on the streets as a teenager, her work as a firefighter began at the age of 18, after she had applied to 31 different fire services. During her career, her interest in psychology and fascination with how people make choices in stressful situations led to her studying for a degree, followed by a PhD. Her research into risk, decision-making under extreme pressure and human error has won awards and she has shared her findings with fire services in other countries. She is also an ambassador for The Big Issue magazine, in the wake of her own experiences of homelessness. Presenter: Lauren Laverne Producer: Sarah Taylor