On November 18, 1987, the worst fire in the history of the London Underground killed 31 people and injured at least 100 more at King’s Cross station.

The blaze started beneath a wooden escalator leading from the Piccadilly Line platforms to the mainline station at approximately 7.30pm.

Though relatively small to begin with, the fire’s heat soon ignited any nearby flammable materials, and at around 7.45pm a 600°C ball of fire and smoke exploded up from the escalators into the ticket hall, killing or seriously injuring those who remained there.

Firefighters in the ticket hall at King's Cross Underground station

Many passengers were trapped underground by the blaze, although most were fortunate to be able to escape on the Victoria Line, which was accessible via stairs.

[Read more: November 30, 1936 - The Crystal Palace is destroyed by fire]

More than 150 firefighters tackled the blaze, which was only declared to be fully extinguished at 1.46am the next day. One, Colin Townsley, was killed in the initial blast, while several were hospitalised for exhaustion and smoke inhalation.