My partner and I have agreed to divorce after a marriage of just over 4 years. We have reached an amicable agreement on division of assets that we both are happy with. My partner has a business that he is unwilling to disclose details of, but is happy for 100% proceeds of the sale of our house to go to me. We have separate bank accounts and any assets in them will stay with the account holder. Outstanding finance on my car will be my responsibility. We have no dependents and crave a straightforward and swift conclusion. We both find this agreement acceptable and wish to formalise it before proceeding. What is our best course of action?