Hi, thank you for your question. Just a bit more information required to fully assist you:
-Where did you get married?
-How old are the children?
-What financial support do you pay - is there a court order or child maintenance assessment regarding this?
Thank you for confirming. As there is no court order or child maintenance assessment there is no payments that she can enforce. However, you have a legal duty to provide for the children and if you stop paying she can apply to the Child Maintenance Service and request that they deal with it so long as you live in the UK. They will calculate your liability based on your gross income and how many nights a week on average they stay with you - if you can confirm these details and that you live in the UK I can carry out the calculation for your legal liability to see if you are overpaying maintenance.
If you do not live in the UK she is entitled to apply to court for child maintenance.
I hope this assists you. If you found this information helpful please provide a positive rating using the stars at the top of this page. I will not be credited for answering your question without a positive rating. Thank you