I believe you have 2 options.
Firstly as regards ***** ***** you can make an application to the Child Maintenance Service. No doubt he will manipulate his income and in the first instance the CMS will accept his most recent tax returns as his income. However the CMS can upon request look into the matter deeper and take into account unearned income such as rental income etc.
In honesty though it is hit and miss how useful the CMS will be. I have certainly come across differing accounts of their attempts to ensure a correct assessment is made.
As you were not married and therefore you personally have no claims unless you made financial contributions towards the home you previously shared you can make a claim against him under schedule one of the children act.
This can be for :
- Capital needs i.e car, and needs of the children such as furniture, laptops for school work and so on.
- The provision of a home until the children are 18 in the event that he has sufficient wealth.
If you were to make an application under schedule one the court would in the first instance require full financial disclosure. The court can also order additional information if so required and have teeth to ensure that the information is provided i.e they can send someone to prison for failing to provide information. So there is a forensic approach to determine his true wealth.
I hope this helps. If you have any further questions please do not hesitate to ask.
There maybe a delay to any further responce as I will be offline for s while.