As far as I'm concerned, the question of the last ten number dialled memory facility of the digital statesman telephone that was normally plugged in at the kitchen socket, and the fact that the police took an interest in Jeremy Bamber answer phone back at his Cottage at 9 Head Street, Goldhanger, were inextricably linked as part of the police investigation, once the nature of the investigation altered from one of four murders and a suicide, and became one of five murders!
I believe that Essex Police obtained the last 10 telephone numbers dialled from the memory of the statesman digital telephone, and that it was confirmed that a call had been made from White House Farm to Jeremy's Cottage at 9 Head Street, Goodhanger, followed by a call to Witham police station (3.26am), and a '999' call (5.55am) requesting an ambulance! I believe that all this evidence was deliberately withheld under pii, and that Essex police seized Jeremy's answer phone and corresponding audio tapes hoping to discover a blank message, and thus be able to disprove that his father had called him, but that he had called himself knowing that the number he had dialled would be recorded in the memory of the digital Statesman telephone!