I am delighted as a test pilot, to have been asked to talk to the Test Pilots’ Group on the subject of light aviation. Originally I was asked to talk about the design of homebuilt aircraft; but, since, leaving the Service and joining the Air Registration Board, to look after all aeroplanes weighing less than 6000 lb, it seems appropriate to take a look at a wider field at this time, without focusing on any specific class of light aircraft.