Ask an Property Solicitor. Get an Answer ASAP.
Thank you for your question
My name is Clare
I shall do my best to help you but I need some further informtaion first
How much is the property worth and how much is outstanding on the mortgage?
Are there any children involved?
Are you aware that the site charges extra for a phone call?
At this stage your only option is indeed an applictaion to the court using the Trusts of Land and Appointment of Trustees Act for a Declaration of your interest in the equity AND an Order for sale to release your funds
You can read more about the process here
I hope that this is of assistance - please ask if you need further details
Given that you were in a relationship you can use Family mediation and find a suitable mediator on the website