I can't say this strongly enough: you had a bad experience with your local Women's Aid. This is not how they are. If I knew who it was I'd report them!
You NEED women's aid now. Call the helpline and get into the system. A WA support worker knows how hard it is to get out, how it takes time. Your situation is even more fraught than most. You have been groomed by a predator from the age of 16, totally isolated andtotally financially controlled by him. Your situation is severe. I think posters are getting the wrong end of the stick here - shaming and berating you doesn't help.
Though I have to say this is NOT a MLC. The predator has moved onto his next victim - another young girl he can totally control.
The Freedom Programme is everywhere - definitely in N London. Try to get along to the course, it is better than doing it online. Not only will you meet others in a similar position but the well trained and sensitive facilitators will support you and hope your hand through this process.
You have a lot of work ahead. He kept you in a prison and you have been abruptly sacked. You have a lot of things to learn in a short time. He was your world - he set it up like that, completely controlled and brainwashed you - it is no wonder you catastrophically imploded when he pulled your life out from under you very suddenly.
You have a good head on your shoulders and, whether you realise it or not, you are showing great mental clarity. That's not easy with what you're facing so take credit for that. I have absolute confidence you'll get through this - but it's going to take time bcs of how conclusively, totally, he has controlled you.
Keep going precious 