Trevor Graham Baylis CBE (born 13 May 1937) is an English inventor. He is best known for inventing the wind-up radio. Rather than using batteries or external electrical source, the radio is powered by the user winding a crank for several seconds. This stores energy in a spring which then drives an electrical generator to operate the radio receiver. He invented it in response to the need to communicate information about AIDS to the people of Africa.[3] He runs Trevor Baylis Brands plc, a company dedicated to helping inventors to develop and protect their ideas and to find a route to market.[4]