Op, you're seeing everyone else as the enemy, people advising you on this thread, the council, the police, and want to kick up a fuss and complain about the way the police treated you, and are complaining that WA and the council will rehome you away from the area, but the person who has caused all this seems absolutely fine in your eyes.
That is a major safeguarding concern.
You are failing to keep your children safe and secure, you're allowing your relationship to come before their welfare.
I was also in an abusive relationship. I get it. Sometimes you feel its easier to deal with the abuse rather than uproot everything. The minute the kids start getting involved, as has happened, you need to reevaluate the situation.
They are living with a mum who, for whatever reason, is failing to protect them, and a man who thinks nothing of turfing them into the street at stupid o'clock at night.
This is no way for any of you to live. Please get whatever help you can, if that means moving then that's what has to happen, at this rate the children will be removed from you and will be moved anyway.