Watch Hospital Special: Fighting Covid-19

Stanley, aged 73, has been in Barnet Hospital for three weeks with COVID-19 symptoms. Consultant physician David Levy is looking after him and is concerned that he is on the maximum oxygen that can be given on the ward but making little progress.

The emergency department at the Royal Free Hospital is inundated with patients displaying COVID-19 symptoms. Among them is 88-year-old Peter who is struggling for breath. He's quickly put on oxygen and moved to what was the coronary care unit.