I'm a social worker and I have been involved in such cases.
Haven't quite read the full thread yet.
These are some of the saddest cases to be involved in.
We have no power to move an adult like the man (nor the children actually unless we go to court or a parent gives permission).
That's why we can't move the man. If police are involved and arrest him and he's bailed with conditions not to visit property or remanded that's great because there's temporary some safety for the children then.
If not, we can say we would request the man to leave but only for a temporary period of time and by agreement. They can say no.
If its at a point where children might have to be removed there's serious risk of on going traumatic abuse in the home. In such cases the man is quite likely to have had previoua arrests and convictions but he won't be locked up for life so if the couple are reuniting straight away that won't protect the child. We know the vast majority of incidents are unreported so the children won't be protected the first time it happens, and even if they were that wouldn't be good enough.
What can we do? We can remove the man, if the woman doesn't want to leave we can't help her leave.
What we can do is make is 100% clear that the man is a danger to the children to both the man and the woman and tell them both that if he's in the house or around the children against any agreed conditions then we would be worried about the safety of the children. That's as close to removing a man as we can go. I don't know why someone posted that bullshit about violent men not being considered a danger to children - violent men are responsible for the vast majority of children on child protection plans. When that fails we have to consider whether the children need to live elsewhere for their safety.
Another thing is that where I've worked women in cases liked that have always had they physical means of leaving partner. The finances, the accommodation, the transport...the new phone number, whatever it takes we have provided this on every such case. This is harder now due to the complete dismantling of services but we still do it. I can't speak for other areas. Again, what we can't do is give women the emotional strength and resilience to see it through after years of grooming and undermining of their self-belief, although we can try our best to encourage it.
These cases are the worst because you can see the emotional impact of controlling and coercive behaviour on the people who are going through it and still entrapped by it. It's so sad and defeating and these are often people who would make great parents if they left.
Sorry for any predictive typing errors