Well done for calling the police.
It's easy to get caught up in shame and embarrassment that he will play on to keep you quiet. But you have no reason to keep quiet, and every reason to speak out.
He sounds out of control and you sound scared. The only way this will change is if you get him out and get safe. He won't ever change his behaviour towards you... Of he wanted to, he would have done it already.
Whatever he says, he's responsible for his own behaviour... Unless he abuses and hits his work colleagues and everyone he knows like this? Thought not. So when it matters to him, he knows how to behave, therefore do not believe him when he says it's your fault. It's really not.
Phone women's aid as soon as it opens. and get into that non molestation order. Don't worry about social services.
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Ss are not your enemy - unless you force your children into a harmful and risky situation by going back to the abusive man.
They are clear that by staying in an abusive relationship when there are chances to get out, a mother is basically letting someone harm their children. They see cases of women sacrificing their children because they care more about the abusive man than the damage to their children. or the abusive man has so much power over the woman she can't see that she is failing her children.
Ss get heavily involved when the mother is too caught up in the relationship to keep her children free from harm. It's incredibly damaging for them to witness violent arguments and their mother getting beaten up.
But I think you know this though, and you're making steps forwards to get out of this. They are totally on the side of women who are fighting for their children's safety and future.
They may well warn you about what can happen if you dont protect your children. And that can feel quite threatenimg and scary. But thats to be very clear with you. They arent here to listen to the rows and ins and outs of an abusive relationship like a friend would. They need to hear how you're changing the situation as much as you can. And they can help you and give advice too.
They're here to help you keep your children safe. Because they will have seen some awful tragedies, and they dont want to see another happen ever again. Show them you agree. Show them you are a mamabear fighting for her cubs. Not a blind woman fighting for her man. And Ss will be on your side.