There are four options. CAL made it up. The detective made it up. The foreman of the jury made it up. None of the above made it up.
No idea what you're talking about Roch. I've taken an extract from Bamber v Regina 2002 which quotes from the judge's summing up. What do you think is likely to be more reliable? Official court docs, CAL, an unnamed detective, an unnamed foreman of the jury? The latter two based on hearsay.
I think you fall into the trap William Clegg KC describes in his vid ie you spend an inordinate amount of time listening to Bamber/supporters without considering what the other side are saying and whether or not they can actually establish what they claim.