The Prince of Wales toured the London Ambulance Service today and met frontline paramedics, call handlers, nurses and mental health experts at the city’s central emergency call and dispatch hub.
Those who met His Royal Highness included dispatcher Sam Stangroom, who was among dozens of busy operators gathering information about emergencies across London.
"It's not the average sort of Thursday working day, is it, having a Prince come into your office?" she said afterwards.
During the visit, The Prince zapped a dummy with electricity in a heart-starting demonstration alongside community defibrillation manager Lynsey Grant.
Ms Grant said His Royal Highness was genuinely interested in the life-saving practice.
"I'm super impressed," she said of meeting him, adding: "I've reached the pinnacle of my career."
The Prince of Wales also met members of a new rapid-response team that will specialise in treating patients in a mental health crisis, in a scheme launching next month.