Hi Eve, you have to give 'reasonable notice' in law for even lodger and excluded occupiers and 48 hours isn't sufficient. Although I'm fairly sure it's not defined anywhere I would say a month was absolutely reasonable and you might get away with a week, but 48 hours really won't fly. You should have this in your agreement, and if you get this sorted out I suggest that you have a proper agreement in future, meanwhile if she's otherwise a good tenant try and thrash it out with her and explain nicely that you simply can't subsidise her. x