In St Mary's, two patients wait for a bed in the intensive care ward for surgery, however the hospital is full to capacity and there is only one bed.

The hospital faces a challenge when almost all of their 297 beds are occupied, and as they try to discharge patients, new ones continue to arrive.

Crane driver Phil collapses at work, and as his paralysis increases with each day, Kevin O'Neill diagnoses him with a ruthless brain tumour.

A woman recovers in the hospital after going into premature labour with quadruplets, having fallen ill on a flight. Only three of her babies survive the dangerously premature births and they are now being cared for in Neonatal Intensive Care.

Examining pioneering treatments for some of the youngest and oldest patients in the hospital. Surgeons prepare to carry out a heart operation on the oldest person they've ever performed the procedure on.

Following the terror attack on Westminster Bridge, there is a major incident at the closest of London's trauma centre, St Mary's Hospital.