At the recent rail crash at Potters Bar, fire brigades, police, ambulances and paramedics were on the scene within ten minutes, armed with an array of medicines, equipment and skills unheard of when the 999 service was first established. In a new series, the people of the emergency services talk about their experiences and show how their service has developed and changed over the last 50 years. 1: The Paramedic. Peter White hears from the men and women who work in what's been called the "Cinderella service": the ambulance service. Producer Elaine Walker Repeat at 9.30pm