Thank you for your question
My name is Clare
I shall do my best to help you but I need some further information first
Do you pay yourself dividends?
Who do you mean when you refer to "your employer"?
I am sorry but the simple answer is you cannot do so.
You can certainly refuse to give any informtaion to your ex.
Since you are self employed the Companies you do work for cannot be forced to give information immediately
However the CMS can access your Tax records if need be to complete an assessment - and if you try and get round it by off shore tax havens THEN they can approach companies you work for
I am sorry I cannot give you the answer that you are looking for