Why is the helicopter based in Cardiff? As part of our research, we have analysed the ‘unmet need’ for our service – the incidents that we were unable to attend due to being outside of operational hours. This analysis found that there is a need for an extended air ambulance service overnight and that incidents are most prevalent in South East Wales. In response to the findings, our existing base in Cardiff Heliport is the most appropriate location for an overnight aircraft. It allows us to respond to the largest proportion of cases but with the capacity to cover the whole of Wales. In addition, when dealing with poor weather, we can use an instrument approach using the technology at Cardiff Airport. Cardiff Heliport is based away from residential areas, reducing the disturbance of aircraft noise at night.