DP just had this from exH by email (in response to DP's ex telling my ex that we now live together, although he knew that already):
"My payments were and continue to be made based on information supplied by PPP which shows her income only. In addition, PPP has instructed my children to conceal information from me concerning your move. My children have told me this is the case. I see that as part of an activity to deceive me about your living arrangements. This has implications for my monthly payments to PPP. There is also the matter of how long this arrangement has been in place.
From information I have I believe you have effectively been cohabiting since last year, and there has been an effort to deceive me by asking my children not to tell me salient information. My future payments to PPP will take account of this period. There is also the question of the truthfulness of details shared in the run-up to the financial settlement as part of our divorce.
I would like to meet with you to discuss several points. I want to review your bank statements, credit card statements and storecard/petrol card statements for the past 2 years, as well as documentation for all accommodation. This sounds intrusive, but I think it is important for us all to be clear about what has been going on between you and PPP in financial terms. I believe from the facts stated above she has lied to me, and has engaged in concealment. If you don?t want to meet with me or share the requested information, I shall draw my own conclusions and make calculations for future payments, and review of existing settlements, in the light of the information I now have."
The only correct bit is that I asked the children not to mention the impending move until it was certain...I part exchanged my house with the developer (new build) and there was less than a week between them confirming that they were willing to proceed and completion on the new house. It is only since completion (2.5 weeks ago) that DP and I began living together, and he did not support me or the children financially at all until then. Since I earn a good wage, he didn't need to anyway.
The DDs don't say much about DP when they are at their dad's because he makes it clear that he is not interested and doesn't want to hear about it. He is in a new relationship himself, but is bitter and angry even though our split was four years ago.
Our divorce settlement was in April because I waited a year for him to exchange Form Es through our solicitors and he didn't so I filed at court for a financial hearing. They then awarded an additional sum over and above what he had already given me and the judge actually commended me for not being greedy! The only questions are 'do you cohabit' and 'do you intend to cohabit within the next six months' and my answers were correct at the time the Form E was sworn (Dec last year) and at both court hearings (Jan and April this year).
Since exH clearly doesn't get that his payments for child support do not depend on DPs income or our living arrangements, the CSA seems the only route to go.
I will ask my solicitor to write to him