The pilot reported that he was carrying out touch-and-go landings when the accident occurred. Circuit traffic was heavy with a number of slower Skyfox aircraft. A film shoot was being conducted with three additional aircraft on the duty runway. The pilot said he decided to leave the circuit area. He came back about 10 minutes later to find two Skyfox aircraft still in the circuit also doing touch-and-go landings. He then did three more circuits before another Skyfox gave a taxi call indicating he would be joining the circuits. At that point he decided to make a full stop landing. The pilot said he was doing a wide circuit to avoid the Skyfox aircraft and was higher than normal on base leg. The distraction caused by the traffic, caused him to forget to lower the gear and the aircraft was landed wheels up.