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 does your ex earn?
How much extra a month would your son need to manage at University?
i am afraid that there is no basis on which you can claim any backdated Child maintenance.
However if your son decided to go back to University he could make an application in his own right for maintenance - but only while he is in tertiary education
I appreciate that this was not what you were hoping for but sadly your good will has been badly abused
Please ask if you need further details
I wish I had been able to give you better news