One thing i found particularly sad about this case, and something that seems relevant to posts that appear on Mumsnet from time to time, was the evidence from the neighbours who said they heard what they believed at the time to be the child being slapped regularly and shouted at but that they didnt report it as they didn't want to cause trouble/that the adoptive parents would guess it was them.
I’ve even seen posts on here from posters advising only to report if it won’t come back on them, to put themselves first. Not just in terms of child abuse but domestic violence as well.
I am certain I heard my neighbour hitting his child one morning. I reported him both to the police and social services. As my house is the only one which is joined to theirs there’s no way they can’t know it was me.
I don’t know what happened, but the shouting and screaming at the kids has significantly reduced since then, so I can only hope that SS going round and having a chat was enough.