If it says in the court order, that he has given up all rights to any possessions or personal possessions in the former matrimonial home, that is it. As you said, “black and white”.
You would be entitled to simply refuse and to dispose of them as you wish. What you might want to do is tell him that he has one more opportunity to get whatever he wants (if you agree) and after that, you will be selling everything. You don’t have to do, it’s just to keep the peace.
Alternatively, you can simply point him to the relative clause in the court order and tell him that he is not entitled to anything. And leave it at that.
If the copies of the tenancy agreement that you have shown that you have to give 3 months notice, then it is three months. It doesn’t matter what has been said.
Can I clarify anything else for you?
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