Can anyone shed some light on my predicament please? My wife left along with our three daughters to live with a new middle income partner. I pay £500 / month on a voluntary arrangement but am concerned that my ex and her partner are using most of this as 'holiday money' or for themselves and that its not really all going to my girls. How can I enforce this or can I place the money in a trust fund or savings account? Meanwhile I am struggling financially. Does anyone know if ex wifes new partner is means tested so that they can contribute more and the 'deserted' non resident parent pay less? Many thanks in anticipation. Martin.