I got an order, for the sole purpose to put contact arrangements in writing and stop my ex’s threatening DS with taking him to live with him permanently and stopping him from being able to call me if he didn’t do x, y & z. I agree however that residence orders do not exist in the same form nowadays.
The mediation service should NOT have agreed to work with you if there was abusive and controlling behaviour during the relationship, so go back to them and explain the situation and those things you didn’t say in your first interview on your own with them,
Nothing that has been said in mediation can be used in court but I would talk to them anyway just for the sake of being able to say under oath that the mediation service didn’t recommend mediation to continue or it was stopped after threatening behaviour from your ex. Much better than saying you abandoned mediation because it was not getting you anywhere.
Problem of going to court is that it brings the absolute worst on an abusive man. My ex went to some heights I could have NEVER EVER predicted as we had a relatively peaceful marriage and friendly split. I suppose that being so competitive he just saw the court process as another game to win.
It was very costly, both on terms of money and emotional resources. Neither DS or I have yet recovered from the emotional damage it brought in. It was also all about control, it was all his way or no way, so he has not seen DS since the order was put in place.
I would consider very carefully whether you want to get into a proper legal fight with him or you may achieve more working with your son on finding a way to improve the time with his dad or to stay safe.
I agree it may be sometimes impossible to avoid court, if things are so bad you are the only one who can fight your child córner and you should if things are that bad.