Cant remeber the story was a while back and just been too lazy to make a report haha... but cracking place! managed to get to the bottom of the tower but it was a tad high 
Stone House was originally constructed between 1862 and 1866 at the behest of the London Commissioners in Lunacy to provide for pauper lunatics from the London area. The buildings were designed in a Gothic brick style by James Bunstone Bunning, and the facility accommodated 220 patients. After 1892, the asylum was able to take "private" patients (patients whose fees were paid by their families, or from pensions). The influx of private patients resulted in a budget surplus, and enabled expansion and improvements of the asylum's facilities. In 1924 the facility was renamed the City of London Mental Hospital, and in 1948 it was taken over by the new National Health Service and became known as Stone House Hospital. A 1998 assessment by Thames Healthcare suggested that the hospital was not suited for modern healthcare; plans for the hospital's closure were initiated in 2003.
Currently - like most asylums it is being converted into housing...
History bit
Stone House was originally constructed between 1862 and 1866 at the behest of the London Commissioners in Lunacy to provide for pauper lunatics from the London area. The buildings were designed in a Gothic brick style by James Bunstone Bunning, and the facility accommodated 220 patients. After 1892, the asylum was able to take "private" patients (patients whose fees were paid by their families, or from pensions). The influx of private patients resulted in a budget surplus, and enabled expansion and improvements of the asylum's facilities. In 1924 the facility was renamed the City of London Mental Hospital, and in 1948 it was taken over by the new National Health Service and became known as Stone House Hospital. A 1998 assessment by Thames Healthcare suggested that the hospital was not suited for modern healthcare; plans for the hospital's closure were initiated in 2003.
Currently - like most asylums it is being converted into housing...
The evidence!
