The ballistics came later, it must have been for the DNA stuff.
It was just tonight that I read it, you would think I would be able to remember. Short term memory syndrome perhaps.
Not that it really matters but I'll have a look and see if I can find it again.
Found it ... definitely ballistics and the author offered him a deal, which rather suggests that you were spot on that there was some monetary advantage for Bamber.
I think if Roger Wilkes says in his book that Bamber ripped the twins' photograph up I think it is obvious from whom he got his information.
SnipTo my tentative first letter, Bamber had replied briskly, pointing out that I was not the first journalist to approach him about his story and asking me not to contact him again unless I was prepared to help. Convicted for the merciless shooting of five members of his family at their farmhouse in Essex in 1985, he wanted to commission a new ballistics report, but had no money to pay for it. Without it there would be no prospect of a full appeal hearing, and no co-operation for me. I offered a deal; he agreed to meet.
https://www.pressreader.com/uk/the-sunday-telegraph/20200105/282149293240572