Following emergency response teams on their most extreme medical callouts.

Critical care paramedics Lisa Brown and Dudley Mobbs are called to a house in High Wycombe where a handyman has plummeted 18 feet from a ladder. In Buckinghamshire Dr Manjit Riyat and critical care paramedic Barry Walsh race to the aid of 10-year-old Riley who has a broken femur after coming off his motocross bike. Also, a 53-year-old has collapsed and is unresponsive.