The Ghost Bus Tours

All aboard the 'orrible omnibus for a ride around the dark side of London. The Ghost Bus Tours' classic Routemaster has been redesigned to give passengers London's first 'Fright Bus' service. On-board actors and technical trickery combine to create the scariest tour in town. A creepy conductor provides the commentary for this sinister sightseeing show, revealing haunted places, unmarked burial grounds and the skeletons in the capital's cupboard.

http://www.theghostbustours.com for more info