490. Because the blood sample of June Bamber no longer exists, it has not been possible to do a direct comparison between her DNA and that of the major component. However, it has been possible to obtain a sample from June Bamber's sister, Pamela Boutflour, which because closely related relatives are statistically more likely to have shared components than unrelated individuals, has enabled conclusions to be drawn. That evidence shows that it is about 3,500 times more likely that the major source of DNA was from a full sister of Pamela Boutflour, i.e. June Bamber, compared to it being from an unrelated female. Both Mr Clayton and Miss Tomlinson, the DNA experts from whom we have heard, assessed this as strong evidenced that the major component therefore comes from June Bamber.
So it seems contact shots for June, Neville and Sheila. This is likely as Neville, June and Sheila were dead or asleep for at least one shot. Giving Bamber the chance to make contact shots.
The DNA and blood evidence having similar results, saying a male and female (June's) DNA was in the silencer. While Sheila's and possible a mixture of June and Neville's blood was inside.
The one thing Bamber can cling to is that there were no traces of Sheila's DNA found in the silencer. But as the judge said at trial, Sheila wouldn't kill everyone and then bother putting the silencer away, and all blood evidence prior to 1996 said it was Sheila's blood.