Regardless of what the outcome is it's very clear in my opinion the boutflour, Eaton contingent were not very close to Jeremy Bamber and neither did they think very highly of him pre 1985 why can this be???
Personally, I'm inclined to think it had to do with Sheila and Jeremy being adopted. When property, land, and family money are part of the equation, often adopted children aren't -rightly of wrongly- seen as being as deserving as biological offspring. I believe there may have been some friction between Robert Boutflour and Nevill Bamber, POSSIBLY over money? and it may have been that until the Bambers adopted, he'd hoped that his own children would be their heirs. I think the fact that the Bamber children had it all handed to them on a plate would have been a bone of contention. They had the benefit of boarding schools, finishing schools, modelling courses, trips abroad, without contributing anything towards the running of the business, whilst his own children, after school, went to state college and then work.