I've had to pursue my ex through the CSM for maintenance. Nothing paid since mid March. Imagine my shock when I discover that despite his new partner getting for double what I earn in a month in my full time, low paid job, and despite her getting child maintenance for the two children she had with her previous partner, (approximately 2,000 per month as he's a high earner) my ex can now claim he is helping care for her two kids and consequently has the CM he pays for our daughter reduced by a pretty substantial amount. There is absolutely nothing that can be done about it apparently - it's the law. So instead of the 450 I did receive before he moved in with her, I am now to receive 350 per month. They have a joint income in the region of 6,000 per month against my 1,500! Is there any way to appeal against this? Has anyone else experienced this? I thought that the CSM was set up to ensure that those that needed it got it.