A young Irish medical student, who helped save the life of a mother-of-four in a London street, has been commended by London's Air Ambulance and Barts Health NHS Trust in the UK.
John Reidy (27), from Ashbourne in Co Meath, performed CPR on the woman, who had collapsed on the street, for six minutes until emergency services arrived.
The Trinity College dentistry graduate, who is now studying medicine at Barts and The London School of Medicine and Dentistry said: "I had never done CPR in a real-life situation before, but I guess I just switched into autopilot mode."
His heroic act while on his way to an evening lecture will be featured on 'An Hour to Save Your Life' on BBC 2 tonight.
The woman, Francita Farrell (32), suffered no brain damage and has been fitted with an implantable cardioverter defibrillator (ICD) under her skin with electric wires leading to her heart.
Dr Gareth Davies, London's Air Ambulance medical director said: "Unwitnessed cardiac arrest has one of the poorest survival rates.
"John didn't hesitate and focused on doing the basics. Quite simply, this saved Francita's life."