They shouldn't have done that, if it's true.
A snippet here on the gun cupboard: https://news.google.com/newspapers?nid=2507&dat=19861024&id=GoJDAAAAIBAJ&sjid=q6UMAAAAIBAJ&pg=2005,5924099&hl=en
Good find, Steve. Reading the links that you provided brings home the difficulty that Rivlin had in conducting a proper defence.
Having to frame his defence whilst accepting the silencer evidence meant that any explanation was always going to be weak. Whatever anyone's stance there are some things that we can all agree on.
Any Bamber innocent scenario cannot stand up if the silencer evidence is truthful, this is surely agreed by all. Silencer used = Bamber guilty. Silencer not used = Bamber not guilty. This being the case, Rivlin, for all the criticism that he has received about the defence was operating blind and with his hands tied behind his back. Whatever the reasons for this, it was an uphill battle working from this false premise.
Even guilters must accept that the silencer evidence is far from clear cut. They may choose to regard the changing exhibit references, unclear paper trails and questionable chain of custody protocols as admin errors or some such but agree that there are questions. We all know more now than was known then, since more evidence has gradually been made known.
The relevance of the missing negatives, specifically the gun cupboard, becomes apparent. The tacit admission by the CCRC that the missing negatives are "significant to the safety of the conviction" cannot be brushed over. The reasons given by EP for the ever diminishing negatives are not credible and wholly unnecessary. It is wilful blindness to accept without suspicion the explanations given by EP and even the most staunch guilter would have to admit, if debating in good faith, that EP's actions throughout give the appearance that they are hiding and disposing of inconvenient negatives.
The "significant to the safety of the conviction" missing negatives of the gun cupboard would if available blow a hole in either the prosecution or the defence. The contents of the cupboard either support the relatives version or torpedo it. Conveniently, yet again, EP have destroyed the vital evidence that would settle the issue beyond argument. How many coincidental errors and oversights before suspicions are aroused?
From the articles posted which include parts of Rivlin's cross examinations, it is apparent that had he been able to show that the silencer was not in the gun cupboard then the prosecution had no case left. Now imagine the photos were available. I think that we all know why they were hidden in the first place.