Hello, my name is*****’ve been asked to look at this for you, thank you for your patience.
Please bear in mind as this is an email service and not live chat I may not respond immediately.
In short, under UK the type of agreement that you are alleged to have signed is not normally legally binding when it comes to divorce. It's called a pre-nup. For it to even be considered legally binding you would have to have taken independent legal advice at the time. The fact that you cannot recall even signing it suggests that you certainly didn't;t take it to a lawyer for advice.
The legal system in the UK will ensure that you and your son are provided for from the divorce settlement. He also cannot throw you out of the house whilst you are still married, and if you are the primary carer for your son the courts will also want to maintain this, for your son's welfare.
I hope that this reassures you.
I would suggest that you may need to appoint a lawyer to represent you as it seems to me that he is a bully that cannot be negotiated with. You should be able to find someone to talk to about taking your case on via the link here:
If you can please accept my answer and rate me 5 stars (in the top right of your screen) then Just Answer will credit me for helping you today.
I will remain available for any follow-up questions, should you have them.