So, I have managed to get some information about practical things (mortgage, savings etc).
I think I can get some free legal advice too, about the house. It was mine when he moved in, and it's only my name that is on the title deeds (he's too disinterested/lazy to deal with the practicalities in life. It's me that runs everything on that front).
I need to find out if he is entitled to anything (like access to my house), as we are married and he has been supporting me.