DC Michael Barlow witness statement 21 November 1985:
He visited White House Farm that Wednesday morning (21 August 1985) to examine the windows, paying particular attention to the kitchen window whose metal catch was "slightly stiff and when fully opened, stuck in the open position." This enabled the window to be closed from the outside of the premises and by tapping the frame in the area of the catch, I found that the catch dropped into the locked position, giving the appearance that the window had been locked from inside." He was able to remove items from the sill, climb out over the sink, and replace everything before locking the window from outside.