Need an explanation on something that I'm finding quite frustrating... If my ex partner is now living with and engaged to someone else who has two children from a previous marriage, why are they taken into consideration when applying through the CSA? His new partner is financially very well off and her ex partner pays over the odds for the children including covering private school fees etc. My ex partner contributes very little to her mortgage etc so outgoings aren't huge for him. I find it very confusing that her children have to be considered, despite the fact they are provided for very well, yet her financial position isn't. Am I missing something?