My ex husband has been striking our children during contact (strikes to the head, kicking), he has also been verbally abusing them frequently calling my boy 'a little shit'. In November last year I asked him to stop this, via an email, followed up by a letter from my solicitor warning him that I would go to the authorities if this continued. The children have reported to me that the abuse has not stopped and he continues to strike them for minor misbehaviour such as 'backchat'. This weekend he showed them a webpage indicating that he was perfectly within his rights to strike them as long as it was 'reasonable punishment'. I have therefore alerted Child Services who are calling me back to tell me what the next steps are, meanwhile they have asked me to get legal advice as to whether I can stop contact. I want to stop unsupervised contact until a resolution has been met whereby I can be confident the children will be safe and he will stop hitting them as a form of punishment. The arrangements for the children is informal and not ordered by the court, he sees them every other weekend. Can I halt contact arrangements until this can be resolved. What would be the next steps?