Mo, I have skimmed through the home office (?) doc posted.
It does cover you, altho it appears cannot apply retrospectively, so that all that has gone before is not counted, needs to happen at least twice so that is nonsense ( your abuse is every day) & the culprit needs to be living with you.
It seems that either you brandish the highlighted document in PC plod's face while he is still here, or need to wait for him to return.
At least that is the way I interpret, (but I'm sure your SHL would laugh )
Glad he's out today, he won't be telling you what he is doing all the time, but you can bet he is keeping his appointments with the bank/solicitor/accountant secret.
He is not stupid, he knows this is happening & will be seeking information on how to protect "his" money. he is brushing it off to you, but who knows his manoeuvres behind your back?
As for a solution ; can you really not borrow some money from your parents/other family ? do you have a rich aunt? no siblings?
After this week. You have a few months of space to breath.
I think you need to force the sale of the house, so that you can move out & will then have some money to rent.
re the children have you decided not to tell them until the summer? surely if he is with you all in the same room & is witness to this announcement, he will have respond to their questions ?