“On Thursday 1st September 1977 at approximately 1am, I was on duty in my capacity as a policewoman, when I received a radio message to 284, Wood [sic] St, Enfield. I went to this address where I found a number of people standing in the living room. I was told by the occupier of this house that strange things had been happening during the last few nights and that they believed that the house was haunted.
Myself and another PC entered the living room of the house and the occupier switched off the lights. Almost immediately I heard the sound of knocking on the wall that backs onto the next door neighbour’s house. There were four distinct taps on the wall and then silence. About two minutes later I heard more tapping, but this time it was coming from a different wall, again it was a distinctive peal of four taps. The PC and the neighbours checked the walls, attic and pipes, but could find nothing to explain the knockings.