01. Episode 1
In the immediate aftermath of the terror attack on Westminster Bridge, three miles away a major incident is declared at St Mary's Hospital, the nearest of London's four Major Trauma Centres.
02. Episode 2
51 year old Glendon from Preston has Glioblastoma, an aggressive form of brain tumour. Since being diagnosed 14 months ago, he has spent 10 hours a day Googling his condition in the hope of living longer.
03. Episode 3
Cameras follow patients at St Mary's who face a long wait, including a woman with serious mental health issues. There is also footage of patients and their loved ones coping with dementia, including a wife who is her 75-year-old husband's sole carer, and is at breaking point, partly due to his aggressive outbursts.
04. Episode 4
With access to two key specialities, cardiology and neurosurgery, staff at Imperial College Healthcare NHS Trust are pushing the boundaries of what's possible technologically, at a time when the Trust has a planned annual deficit of £41 million.