After paramedics Martin Macarthur and Luke Sullivan restarted Mr Dempster's heart, Hoffman said: "Great job, guys," The Sun reported. Mr Dempster was taken to hospital and underwent life-saving surgery. Mr Dempster told the newspaper: "It's unbelievable."
A jogger who suffered a cardiac arrest was saved after Hollywood veteran Dustin Hoffman went to his aid. Sam Dempster, 27, collapsed during a run in London's Hyde Park.