Peter Henry Calder OBE FREng (1926 - 2013): Silver-gilt Order of the British Empire (OBE), cased, Warrant of Appointment, Statutes of the Most Excellent Order of the British Empire 1970 and other paperwork, 9ct gold Royal Aeronautical Society medal (1988/89), and a silver-gilt Royal Aeronautical Society medal awarded to his wife, Mary Calder.
Peter Calder a prominent British mechanical engineer best known for leading the development of the Olympus 593 turbojet engine that powered the Concorde supersonic airliner. Overseeing the joint Rolls-Royce–Snecma program, he helped enable Concorde to fly at twice the speed of sound while meeting the demanding reliability requirements of commercial service, earning an OBE in 1976. Later, he contributed to advanced propulsion projects such as Harrier engine developments and served as president of the Royal Aeronautical Society from 1989 to 1990, promoting innovation and professional standards in aeronautical engineering.