My ex's new girlfriend and her kids regularly stay over at his house when he has our children. Through the grapevine I've heard her children have been violent many times against other children. Also that her much older child refused to live with her when she split from his dad and has not wanted contact with her since.
My ex regularly drinks at the pub before picking up the children, and most days he has them, takes them there so he can have a few drinks. I think he is becoming an alcoholic.
I am becoming worried about the safety for my children when my ex has them - are there any organisations that can help in these circumstances?