I am estranged from my mother. I have adult daughters. If I was to die I don’t want my mother to inherit my stuff or have any say on any matters relating to me. This also goes for decisions should I need medical care. I have a long term partner, whom my mother despises. I don’t want to get married. I own property and he doesn’t. I want it to go to my kids. He is not their dad. He has his own pension/home etc. Is it as simple as making a will?