Personally, I don't think there are, just things that weren't used at trial. Jeremy has already been told if he asked for specific documents, he can have them but he won't play ball. Guess as long as he maintains they're being withheld, it makes him the victim! Boo Hoo! 
There was hundreds of thousands of documents withheld from Bambers legal team pre-trial, not only stuff which supposedly fell under pii - there are still to this day a very large amount of documents still either missing, unaccounted for, or still being withheld under the same (get out of jail free clause) pii...
Also, there are photographs taken by the first SOC team who captured the various scene inside whf, between 9.00am and 10.00am, which coincided with senior officers performing their 'informatives' when they shifted the bodies one by one off the top of the bed, and [positioned them both on the bedroom floor either side of the bed! Sheila's body was photographed on top of the bed sporting only one shot to the neck, I have seen it myself, I had the photograph in question in my possession, I posted it to Jeremy at HMP Full Sutton, but it was intercepted by Prison Security, and it caused merry hell between Jeremy and his new legal representative (GDS), and between Jeremy and myself, but he knows that I had that photograph, and he knows that I sent it in to him, and he knows that I took it from the album of photographs loaned to Ewen Smith by the CCRC, on the quiet because Ewen had applied to work for the CCRC, and eventually was accepted as part of their organisation...
Sheila Caffell was definitely laid on top of the bed, shot once in the neck, with no gun on or near her body, and no bible on her chest or anywhere near her body on the bed at all..
I do not say that I ever saw a photograph of Sheila's and Junes bodies on the bed together, because I didn't but from what Ann Eaton says she was told by a cop she cannot remember the name of that Sheila's and Junes bodies were found on top of the bed side by side of one another, and that there was a rifle on the bed in between both bodies, and that Sheila had a bible on her chest!
I am not saying that the first team of SOC ( DC Oakey and DC Henderson) who captured the various crime scenes at the farmhouse never photographed both of the bodies on the bed before senior officers authorised the movement of them, to either side of the bed in which they had been laying upon, since I have never seen any such photograph(s) but they must surely exist...
I am not here to tell lies, I am here primarily to get to the truth, albeit my version of the truth...
My version of the truth in this matter is more believable than the version of the truth which Essex police, the relatives, and the experts from the lab', have been responsible for presenting...
Greed on the part of certain relatives, and fear on the part of Essex police, lies at the heart of this case...