The remains of Holland House (it sustained devastating damage during the Blitz) are said to be haunted by the ghost of Lord Holland.
Prior to its destruction, a room in the property was said to be the spot his apparition would appear, holding his head in his hands. According to another source, Lady Diana Rich saw her Doppelganger (an apparition in her own likeness) in the house a month before she died in 1658.
Pictured left are the remains of Holland House courtesy of N. Chadwick.
For further information, please read Haunted Britain by Antony D. Hippisley Coxe.