John Ware reports on the system of directly-elected mayors, focussing on Tower Hamlets.
Jane Corbin examines Pope Francis' shake-up of the Catholic Church.
Panorama investigates fraud in the National Health Service.
Vivian White hears from doctors about the pressure of working to government targets.
Paul Kenyon reports from inside the Ukrainian military bases surrounded by Russian troops.
Darragh MacIntyre investigates the dramatic rise in the number of food banks in Britain.
Panorama investigates the mysterious disappearance in Dubai of a British businessman.
Panorama investigates the causes of the flooding that has devastated so much of Britain.
Panorama is undercover to expose Britain's multimillion-pound trade in immigration visas.
Reporter Chris Rogers visits a North Korean university which is paid for by the west.