To dismiss any claims in the future you need a court order. If you can agree between yourselves a solicitor can draft the agreement in a Consent Order which is then submitted to the courts for ratification along with a simplified disclosure.
A judge is duty to ensure the order is "fair" i.e. complies with the law and he/she wouldn''t be able to do without any financial information.
Thanks, out of interest, if I disclosed my finances and my ex doesn''t disclose her finances will it end up costing me in court fees or would she have to pay any fees incurred in trying to get her to supply the info?
I am under the impression that before even receiving a court hearing the fees must be paid in advance. Is this right?