Julie Mugford
The position of JM is absolutely key to this case. It's perfectly possible and understandable to write off her evidence as that of a woman scorned, but consider when doing so the profound implications - that just because she had been thrown over she would condemn an innocent man to spend the rest of his days in prison and that she would risk her own liberty to do so. Not impossible but is that really likely?
Now consider that she told a version of the truth. A whole lot of things make much more sense if she was not merely in the know but an active party to a conspiracy to murder. That is my suggestion. Her end would be marriage to Bamber, social elevation and financial gain. That's quite something for an unattractive, not very bright woman of limited brains and prospects.
Of her general character, we know she was a burglar, a fraudster and a sly actress - so the profile isn't bad. Let's look at the story she told. She did not claim to have discovered Bamber's plans after the fact. She knew, and admitted she knew, them in advance. She knew from as far back as 1984 when he was planning to put them to sleep and burn the house down with them inside it. She obtained and supplied him with temazapam which, with her knowledge, he tested on himself, reporting that they didn't work.
She knew in advance on the night of the crime what was going down. Bamber called at 10.00 p.m. and told her it was now or never. Did she call the police ... ? He called her after 3.00 a.m. to tell her it was all done. Did she call the police then ... ? No. She went into Sue Battersby's room to talk about the call or, as I think, to make sure Battersby had heard the phone ring and would corroborate Bamber's claim that he had called Julie. Why was this important?
Bamber had a problem. He had to account for the time he spent cycling home from the farm. There was going to be a suspicious gap between Nevill's alleged call to him and his call to the cops as a result. He filled that gap with the call to Julie and by claiming, falsely IMO, to have spent 'ten minutes at the outside' looking up the number for the local force and hanging on to get through, rather than taking 10 seconds to call 999. IIUC he even circled the cops' number in the phone book. How very artful.
Now, consider Julie's position. She backed up his story, which means at the very least she committed the serious offences of impeding police enquiries and perverting the course of justice. At the very least. So she was in it up to her neck. She played her part. The press coverage went well, as did the funeral, but then things started to unravel. Bamber was having too good a time with his rather too close friend, Brett Collins. She could sense she was being edged out. She had taken a huge risk for him but, as they drafted apart, he was threatening her she had to keep quiet or he would take her down with him, all the while playing the field with other women. She said later she was not afraid of him at first but that he started to fear her and that caused her to fear him.
Things came to a head. They had a massive bust up. She was not going to be lady of the manor after all. Bamber tried to fob her off with a paid holiday. She didn't take his money. She told Sue Batterby the whole story. She told another friend and then another. After a few weeks she went to the police.
Consider the risk she took. First, Bamber might make good his threat and take her down with him. She gambled, correctly, that he couldn't do that and she had a fall back position anyway - to call him a liar or to claim coercion. After all, she had not herself shot anybody. Second, the cops might prosecute her for murder, conspiracy or perverting justce. No getting out of that one, unless some kind of deal was done in advance. That's possible but there is no sign of her taking legal advice and I doubt she had the know-how to plot her way through such a deal. Her calculation must have been that since the trail had gone cold her evidence would be so essential to the cops that they would use her rather than accuse her.
And so it panned out. I believe its obvious why nobody focused on this angle. Nobody concerned in the affair had anything to gain by doing so. On the contrary, there was much to lose for everyone. I find it very credible that the DPP authorised some kind of informal deal conferring immunity. There are a few things to be said about that but I will pause at this point for any comment.