This isn't really much to go on at all.
Firstly the accuracy of contemporaneous notes is subject to how the information was observed, did Ann see the bodies herself, or if she was told by a police officer, then did that police officer see the bodies or did someone tell him/her.
Also if you are going to take that particular sentence as fact then what about this one?
"3:00am Nevill called Jeremy, then the line went dead"
The police officers statements must be a more accurate account of events than these second hand information notes.
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The police officer who passed this information onto Ann Eaton, must have seen the body of Ralph Bamber in the kitchen with his head in the bucket. This same police officer must have seen the body of June Bamber near the door to the bedroom. This police officer must have seen the children in their beds. This same police officer must have seen Sheila's body on the bed - the identity of this police officer, who gave Ann Eaton, all of this information, should be declared and should have been declared, because this police officer had first hand knowledge that Sheila's body was on the bed, and that it had been found upon the bed. Such information and evidence is capable of seriously undermining the prosecution case, and the evidence given by other police officers that Sheila's body was found on the bedroom floor with the rifle on her body (not the bible) and the bible by her side (not on her chest)...
The identity of this police officer needs to be found out and established - I can't believe and I do not accept that Ann Eaton does not know the identity of this police officer, because she only came into contact with a few during those early days:-
(1) DS Jones
(2) DC Carter
(3) PC Robert Carr
(4) PI "Bob" Miller
It would be a simple case of deduction to work out which of these police officers could have been present inside the bedroom at a time when Sheila Caffells body was on the bed...
DS Jones, and PI Miller's, names spring to the fore...
I am aware, that Dr Craig attended the scene with PI Miller, and that both made witness statements declaring that Sheila's body had been found on the bedroom floor with the gun upon it, but DR Craig later informed Ewen Smith (Jeremy's solicitor in 2003) that Sheila's body was on the bed, not on the floor at that stage. What this means is that it is a very good chance that it could have been PI "Bob" Miller who told Ann Eaton that Sheila's body was found on the bed, with the bible on her chest, and the gun on the bed next to the body...
I have personally seen a picture of Sheila on the bed...
In my opinion, Ann Eaton, knows far more than she is prepared to let on, about who told her Sheila's body was on the bed, not on the floor when police found it in the bedroom...