"The image depicted a scene from Quentin Tarantino's Pulp Fiction, with Samuel L Jackson and John Travolta clutching bananas instead of guns.
It had become one of the most famous graffiti paintings by the artist.
Transport for London said a tough line had to be taken on graffiti because it created an atmosphere of social decay.
The Pulp Fiction mural was visible near Old Street Tube station.
In place of the famous image, another graffiti artist has spray-painted the words "come back" in large letters."
The rest of the story at bbc.co.uk