Series one was filmed over six weeks during 2016.

Series two was filmed over six weeks during 2017.

Series 3 is largely focused on staff and patients at Queen's Medical Centre in Hull and Nottingham Hospital.

Series 4 follows six trusts across Liverpool, whose hospitals have a catchment area stretching beyond the city to north Wales, Cheshire and the Isle of Man.

The story of the NHS in unprecedented times. Series 5 charts the day-to-day life of seven NHS Trusts across the city of Liverpool.