Nevill said he feared he would die in a shooting accident. And that he must 'never turn his back on that young man'.
He has never mentioned Brett Collins. Obviously he was not afraid of Sheila as she had been invited over to stay with him & June.
I bet there was a lot saying that about Bamber, never turn your back on him

Good point about Sheila Adam, Neville would feel quite safe around Sheila, like Barbara Wilson said “Sheila appeared frail and slow in her movements “ Hardley someone who’s going to batter you is it?