Barmaid specialises in this
make sure you get a lawyer who knows about 'equity'
the mortgage co wd LOVE you to pay off the mortgage.
pas de mortgage. what rights does that give you? none - certainly not to sell on. It will not give you title, but MAY give you a right to part of the proceeds on sale
It depends whose name the Land Reg has the owner. That gives the name of the person who can sell - it seems your partner
You say there is a will, and there are difficulties - which implies, you are not mentioned....You need a solicitor who specialises in wills and equity
and the rest of y'all out there
make a will / wills for chrissakes and avoid all this !