My partner and her ex are both polish ,they both got their

Thank you for confirming.In relation to the child maintenance payments, £55 per month for both children will amount to him earning £18,000 per year. If she has evidence that he is earning more than this then she can present it to the CMS for a reassessment of his income. In relation to the passports, she should formally write to him requesting their passports as it is usual for the children's main carer, and the person receiving the children's benefits to hold their legal documents. She should also put him on notice that if he does not return the passports to her that she will pursue an application to court for a specific issue order (for passports to be held by the mother). This can be done to her local family court under Form C100 and a £215 court fee.If you have any further questions regarding this please let me know. In the meantime if you found this information helpful please provide a positive rating. I will not be credited for answering your question without a positive rating. Thank you