A number of Lodon Underground stations are said to be haunted with dozens of reported sightings over the years
It handles millions of passengers every day as one of the world's busiest transport networks.
Now more than 150-years-old, the Tube is thought to hide some of London's greatest secrets.
And one passenger appears to have stumbled on another after claiming he's filmed a ghost at a station.
The short clip, filmed at Knightsbridge station, west London, was taken by an unidentified man as he waited for a train.
He films along the platform as he appears to wait for a train.
But, as he spins the camera around, a spectre can be seen just inside the tunnel.
It seems to crouch at the entrance to the tunnel, lean over the tracks and then hide behind the barriers.
The track between Knightsbridge and South Kensington stations curves sharply, reportedly so it avoids a 17th century burial pit for leprosy victims.
According to historic-uk.com, a small plague pit dating from around 1664 is thought to have been used as a burial ground for those who died at the nearby Knightsbridge lazarhouse.
A number of Tube stations are said to be haunted, including Bank, Liverpool Street, Aldgate and King's Cross.
In 2000, night workers at Liverpool Street reported spotting a ghost on CCTV walking along one of the station's platforms.
Paranormal activity
Ghost baby
Teenage poltergeist
'Grim reaper' spotted
Supermarket spirit
Horse-riding spook
Sir Walter, is that you?
A hooded figure
Graveyard ghost
However, when one of the shift workers went down to investigate he could see nothing while a colleague claimed he was stood right beside the apparition.
When the pair went to investigate together they found a mysterious pair of white overalls lying on the platform.
(Source: Mirror)
