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 house worth and how much is outstanding on the mortgage
When did you last live there?
How old are the children?
How much was the mortgage payment?
Where did the deposit come from and why was the house not purchased in joint names
Did you ever talk about what might happen if you separated - was it referred to as "ours" rather than 'Mine"?
Was he not paying Child Maintenance?
Where are you and the children now housed
Is that a private rental or a Housing Association?
Do you have any specific need for a lump sum at this time (obviously I know it will help - but anything specific)
Has the sale actually completed?
This is a difficult one.
Based on what you have said you have a reasonable case for arguing that you were entitled to a 50% share of the property based on the fact that you paid the mortgage from your own resources, and left when you could not do so. This makes it clear that you viewed it as a joint endeavour,
If the house has still been owned by him then you would have been able to prevent the sale until the issue had been resolved which would have kept the pressure on him.
You can still make the claim using the Trusts of Land and Appointment of Trustees act - but if he has spent it all then that could be a problem.
Your other option would be to make a claim using Schedule 2 of the Children Act for a lump sum to cover the matters that you have described - either by way of a lump sum or instalment payments
The key will be where the proceeds are now
Please ask if you need further details
That is because it should be Section 1 - I am sorry