Just to check my understanding.
You pay all household expenses - mortgage, council tax, utilities phone bills (including his) DS school fees - he pays for what? The food?
You paid for the repairs for your mother's house out of your own personal money? ..and you felt it necessary to ask your husband's permission to spend your personal money how you wanted?
Your husband is now asking your mother to repay the money into his account - not a joint one?
In the meantime he's saving for the both of you? REALLY? How much has he saved - I bet you don't know. He's saving for himself if he's actually saving at all which I doubt.
I'm sorry, I'm not one to jump to LTB but time to get your ducks in a row, see a solicitor.
There are many ways of abusing someone - you don't have to be violent. I was in an abusive relationship for many years. He controlled the money moved onto what I wore, who I saw.,,, It may seem strange, but I was kind of relieved when he finally became violent when I started to kick back. At least once he became violent I was able to take action & I had bruises, broken ribs etc to show the police.
I didn't feel able to say anything when he was controlling my money, what I wore etc. because I didn't think they would take it seriously. But I've since trained as a counsellor & work on a voluntary basis for Women's Aid. I can tell you that it will escalate & I suspect that you know it.
Leave now.
I suggest your mother takes the development co up on their offer & you move in with her.
At least (hopefully) you can prove that you've paid for the house & when you leave him he won't be entitled to diddly squat.
Good luck darling. But please, please don't let this man continue to abuse you as I fear the abuse will only get worse.