This is what the COA said happened?
118. James Richards, another student from Goldsmiths College who had met the appellant through Julie Mugford, heard him talk of his parents in about February 1985. He claimed they kept him short of money and that his mother was a religious freak. He said, "I fucking hate my parents".
Then you take into account what he told Brett that he hated his mother, and there was two sides to her, he didn't like the fact she was giving money to the Church. Brett also said, there didn't seem to be any love between him and his Dad, not close?
Although both of these witness statements don't mean Bamber killed his parents, i do believe he talked this way about his parents, it is obvious they are both saying Bamber said the same things, it was a repeated theme he often used i believe
It's certainly adds fuel to the fire, and would be used at trial.