If Bamber wasn't innocent, the police made it extremely difficult for him to prove that he was.
Having made the initial - and seemingly obvious - decision that it his sister was the killer, the police obligingly threw away most of the forensic evidence.
To help tidy up the farmhouse they said!
Also noteworthy is the sister's mental health history; she was a very troubled lady.
Whilst the police didn't set Bamber up - or falsify evidence - they destroyed it; drastically impeding the defence case.
Making false allegations has many similarities to destroying pertinent evidence - when it denies the accused the right to examine it.
Undoubtedly, this case needs to be looked at again - in the light of new forensic technology.
Sifnicant too that the Essex senior investigating police officers were transferred or resigned soon after the crimes.
Bamber has ran an external (to his prison cell) blog, for many years. Much of the allegations and evidence produced/made in court was provided by a jilted girlfriend.