Long story...dps scooter broke down earlier, bloke round corner helped him bring it back on a trailer, dp asked 16 year old ds to help him get it off the trailer but he kept refusing (not great but stroppy teen). Before I knew it the blokes pushed past dp, charged in house, grabbed ds by neck of jumper and pushed him against the corner of bathroom, calling him a disgrace and then told him to p* off. I heard him but didn't see what he did but when he told me, I went out to him and said if he touches my kid again I'll have the police on him. Is this assault?