James Nesbitt explores some of Britain's most tragic disasters, starting with the 1999 rail accident at Ladbroke Grove in London that left 31 dead.

James Nesbitt examines the tragic events of 6 March 1987 when the ferry Herald of Free Enterprise capsized, resulting in the deaths of 193 passengers and crew.

The actor examines the Piper Alpha oil platform explosion of July 1988, one of the most devastating man-made catastrophes to date, in which 167 workers died.

The Munich air crash of 1958, when a flight carrying the Manchester United football team crashed on its third attempt to take off from a slush-covered runway.

The actor explores the King's Cross underground station fire of November 1987, which ignited under a wooden escalator and claimed 31 lives.

Grenfell Tower: James Nesbitt examines the Grenfell Tower fire. On 14 June 2017, the 24-storey apartment block went up in flames leading to 71 deaths.