
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.

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.