SJ was possibly looking for promotion,nugs,and I imagine after the bungled Diane Jones murder,his neck may have been on the line too,as they were all being held over a barrel at the time of the WHF murders.
" Taff " was the more senior too,so what he said,went----------and I don't doubt that whatever his conclusion,it would have been the right one.
It was more the relatives who had the greater influence,and who they knew,not what they knew because they knew sweet f.a. about the Bamber family.