Unsure how to move forward

[Starlight03]

I'm really just looking for some advice. Myself and my partner have been in a relationship for a decade. I have children (teens), he doesn’t. To cut an extremely long story short, I no longer want to be with him. I feel that I’m walking on egg shells and have to have ‘a game plan’ in my responses and what I say to or in front of him, as he seems to have a problem with so much and I don’t want to trigger a bad reaction in him, which is usually being ignored for days on end and tension which I struggle with. He NEVER behaves this way in front of the children, to the point that they think he’s hilarious and wonderful.
One issue is, whilst we co-own our house and I have always paid 50% of everything, I am unable to get a mortgage for the size house that I need, on my own.
Mainly, I’m terrified of the damage it’ll do to my children. I almost went through with it last year, but all of them were so badly impacted that I decided to stay. now I’m at a point where I’m not able to parent how I want to because of him. I want to have a close relationship to my children and for them to feel that they can have friends round etc, but he doesn’t like anyone in the house, so has compromised and allows it every so often. That’s not what I want. I want them to be here as long as they want to be, to have friends and partners visit and become a part of the family. Instead they feel they have to be out all of the time, in order to see their friends. It may not sound like a big deal, but that’s just one example of many, of how I’m unable to be myself as a parent because of him. he’s extremely unreasonable, so despite many attempts to talk to him, he feels that I’m in the wrong.
Can anyone please help me with advice on how to move forward? I’m so stuck and have no idea where to turn.

Look for a smaller house. Maybe you could sleep in the dining room or another room that is not a bedroom.

Will you be entitled to any benefits when you are single?? Look on entitled to or ask CAB.

You could always rent for a while and try and increase your income.

But don’t sacrifice your childrens teenage years for this guy.

Best wishes

This is no way to live.
Maybe look at Shared Ownership, or Help to Buy (if that's still available) or rent.
He's belittling you and you can't be yourself or parent freely. Can you ask that he buys you out? Don't put a man before your kids.

Thank you for your responses. I earn a good wage. Unfortunately, it’s the area we live in that’s the problem. It’s only myself and my elderly mother here, so I can’t move away due to her care and support needs.

I looked into shared ownership last year and the house prices were so much more than buying an older house so there was little difference. The rental market here is horrendous also. This may be my only option though, so definitely going to research it.

I’m really not putting him first. I have no problem leaving him as I don’t want to be with him. It’s logistically and emotionally for the children because of how badly impacted they were last year and them thinking he’s wonderful. I know I should be grateful that he doesn’t behave that way in front of, or to them, but it’s making this process very difficult and I don’t know how to support them through it.