I know this is a generalisation and I'm sure many SE NRPs do pay but I know it's a huge problem for the CMS, as it was for the CSA. My ex takes great joy in not paying a thing, insisting that he isn't earning anything. He won't even answer the phone when they call. I suspect that when he sees a private number, he ignores it in case it's them asking him to pay for his son how dare they If someone didn't pay their gas/electricity/council tax for four years and built up thousands of pounds in arrears then they would have been in court by now. Although they are trying, nothing seems to be happening very fast. It's so frustrating and so unfair.
Just wanted to get that out!