Thank you for your question
My name is Clare
I shall do my best to help you but I need some further informtaion first.
Are you married and are there any children involved?
Then you are correct -there is no need for a written settlement - that would only be essential if you had been married.
Your ex is actually "buying you out" and the Transfer itself does indeed represent the "receipt" as it were.
What will happen is that her solicitor will send you the Transfer and ID documentation to sign and you will send them back to him.
He will hold them "to your order" until the completion date - when he will release the monies to you
Please ask if you need further details
Have you not agreed that between you already?
I would expect it to be confirmed in a letter from her solicitor - but an exchange of emails between you and your ex would be fine!
You are most welcome - I hope all goes well