The<unk>  is a registered charity, which uses a helicopter to provide an air ambulance service to the English counties of<unk>  and<unk> . The air ambulance came into service in March 2000, following the success of similar schemes, such as Devon Air Ambulance and Cornwall Air Ambulance. The air ambulance headquarters are at Wellington in<unk> , but the helicopter is based at Henstridge Airfield in<unk> .
Dorset and Somerset Air Ambulance
Scotland's Charity Air Ambulance
Hampshire and Isle of Wight Air Ambulance
London's Air Ambulance Charity
Children's Air Ambulance
Commission on Accreditation for Respiratory Care
Civil Air Search and Rescue Association
Commissioning Support for London