At approximately 1400 in Regents Park, London, driver of Hertz vehicle registration LM17 YVZ failed to allow oncoming traffic with right of way pass before turning right onto the outer circle at the junction of York Gate, heading north. In so doing he forced me, on a bicycle to take evasive action and to brake heavily to prevent him hitting me. He gesticulated to me, by pointing to his temple, indicating he thought I was mad?