As a previous user of this site who seemed to never take advice.
I have popped back to thank those of you who gave me advice and kicked me up the ass when I needed.
My EX is now very much my ex, my home is finally becoming what I want it to be. My children are coping in very different ways but we will get there.
The final straw for me was when I realised myself that he was indeed an abuser although not physically. He was admitted to hospital and had minor surgery, he called me later that day to say he had been told to inform his next of kin that he was being rushed back for emergency surgery. I called less than an hour later to see when he would be out of surgery to be told that he had not been back down and basically it was all a lie.
I have now laid out guidelines for him seeing his son, as my eldest doesn't want to know him anymore. And I have you all to thank, so while it didn't seem like I was taking the advice, I was but I had to see it for myself and that is when ALL your advice came into practice.
So from the bottom of my heart and on behalf of my dc I would like to thank you all for helping me to see what was happening, I just wish I had seen it a lot sooner.