H and I are in really trouble. Last month he wrote a 'settlement' if we split up. He earns about £120k, we live with his three children and my two, we are married but have no children together. He has written that he will pay me x amount a month for maintenance for me and x amount of profit from his company every quarter. This in theory would enable me to leave our abusive marriage, although I am desperate to make it work although it appears he isn't. So my question is, I could live on this money with my children but I would be at his 'mercy' iyswim, say I upset him, he might not pay for a month and I would be in trouble, do you think I could make this legal or is his signature on the paper binding.