3 The appellant had been in a relationship with Ms C M Willett for a number of years. That relationship had come to an end some six to seven weeks before the events the subject of these proceedings. On the day in question, Justin, Ms Willett's eight year old son, had spent the day out with the appellant and his two daughters. The appellant wished to speak to Ms Willett when he drove Justin back to Ms Willett's home. He maintained that, before returning Justin, he had telephoned Ms Willett to apologise for his being late and that Ms Willett had then agreed to his request that she should come outside and speak to him when he arrived at her home. His evidence was that, on his arrival, he parked his car on the roadway end of the driveway leading into the premises. Justin left the car and went inside the house. The appellant said that he waited in his car, with the engine running, for Ms Willett to come outside and talk with him. He claimed that he waited for probably five or ten minutes with the engine running as a sign that he was not there to stay. It appears that Justin returned to the car on at least two occasions. On one of those occasions, the appellant said Justin passed on a message from his mother that she did not want to talk to him and asked him to leave. On another occasion, however, the appellant said that Justin had told him that his mother would be coming out in about 30 seconds. While the appellant was sitting in his car, the respondent came out of the house, told him that Ms Willett did not want to see him, that he was upsetting the children and asked him to leave. After both Justin and the respondent had gone back inside the house, the appellant, leaving his car engine still running, went to the front door and knocked on it. The respondent emerged and, according to the appellant, grabbed him by his shirt with both hands and pushed him backwards and forwards a number of times before finally, he said, using an amount of force which caused, in his words, a large crack at his neck when his head flew back. He claimed that he was then numb from the neck down. The learned Commissioner found, however, that the appellant had not been assaulted as he had alleged, although he accepted the respondent's admission that he had pushed the appellant in the chest, punched him in the back and in the stomach, and then placed him in a bearhug and walked him from the verandah of the house to his car, where he had pushed the appellant in the back towards the driver's door.