If evidence was ever concealed, how would she or anyone else be party to it? Like you said yourself, there isn't an envelope with 'concealed evidence' written on it. And like I said, I think your new vigour is simply to try and readdress a conceived imbalance on the forum.
Arguing that evidence exists without evidence to back it up, isn't a strong argument. For your theory to be correct, not only did EP conspire but the conspiracy went from brass tacks up to senior level, spreading to the civilian section and the lab workers. And even today 30 years on the echelons are working to keep one Jeremy Bamber (farmer) in prison. But it's OK, this theory doesn't need a 'why' - it just is? 
To imply that my recent posts are related an imbalance on the forum is a bit below the belt. I'm not a liar Caroline and I'm not an attention seeker. I don't use tactics.
I still do not understand why you have a problem with so called 'conspiracies' involving police corruption / forensics etc. The police do and have fit people up over the years. It probably does require a joint effort, involving prosecution witnesses and technicians or experts of some sort giving one-sided evidence or asking loaded questions etc. It probably also involves various examples of non-disclosure and obstruction / using the system to impede rather than to assist an accused etc. There do not seem to be many whistle-blowers for this kind of thing. It either gets uncovered or it does not. To pretend it doesn't exist - I just don't get. i have asked on here whether anyone knows any police whistle-blowers regarding specific cases. There probably aren't because they probably raise concerns internally and their concerns are simply noted!
Regarding Jacqui - I meant if
she was aware of specific evidence that
clearly indicated Sheila - then she would of course be right in saying 'I know Jeremy didn't kill his family'.