OP I’m sorry to read you’re having such an awful time. He’s basically broken you, then dumped you.
On a purely practical note, when I have been so severely depressed I can’t eat I was getting cans of soup, heating them up and putting them in a mug. For some reason drinking them like a cup of tea was easier than trying to eat out of a bowl or trying to eat a meal. Could you try this?
I echo PPs above, womens Aid might be worth a pop. You have been systematically worn down to the point where you no longer have any sense of self. Yourself is still there, it’s just been so thoroughly squashed that you can’t find her. She is in there though and you need some help to find her again.
Unfortunately the NHS really isn’t much help to you as far as therapy goes. They lack any sort of framework to help abused women. I have found this out for myself.There will be other domestic abuse organisations in your area though and they might be able to signpost you.
Please please try to eat something and keep yourself healthy. Your XH is a shit and he doesn’t deserve you to be defeated by his evil actions. You deserve to have your own life now you’ve finally got rid. Please cast your net out for as much support as you can get. Unfortunately the system is such that it won’t come to you, and i know it’s hard to ask for help when you don’t feel you’re deserving, but you really are deserving.
Good luck OP. You aren’t too old and it doesn’t matter if you have kids or not, this space is here for you to talk so please feeel welcome to use it.