You have to remember that if you have dependent children, under 18, the situation can be completely different.
Parents are under a duty to provide a home for dependent children until they reach 18 and therefore, unless there is a lot of equity in the property, sufficient to release some money to the non-resident parent AND provide a home for the resident parent aAND the children until the youngest reaches 18, it’s unlikely that the non-resident parent is going to be able to force a sale of the property.
The only good news is that the party that remains in the property is responsible for the mortgage and the bills.
The situation would be completely different if there were no children and it would be infinitely possible for the person wishing to sell to force a sale of the property if necessary under section 14 of the Trusts of Land Appointment of Trustees Act by applying for an “order for sale”.
Dependent children, under 18, change all that. However in those circumstances the resident parent would be responsible for the mortgage and the bills not the non-resident parent although there is still the possibility of child maintenance and spousal maintenance.
If the parent with residence of the children cannot afford doesn't want to live in the property because, for example, it's too big, they can always sell it and asked the court to apply the proceeds to a new house to provide a home for the children until they reach 18. Only then would it be sold.
So the chance of you being able to sell the property to get your money out of it until the children are 18 years of age is slim. Sorry.
Thank you for letting me assist you with your legal question. I am glad that I was able to help.
I am not certain whether that answers the question for you or not, but I am happy to answer any specific points arising from this.
It will be my pleasure to help you again either further with this or any future questions you have