John Alcock was born on 5 November 1892, perhaps in the coach-house adjoining
Basford House on Seymour Grove,
Firswood,
Manchester,
England. His family lived for eight years in Lytham. He attended Heyhouses School in
Lytham St. Annes, from 24 April 1900 to 5 April 1905. His father worked for Sir Edward Hulton's Press. His family moved to 6 Kingswood Road in Ladybarn, Fallowfield.His father died on 14 January 1943. His brother ESJ Alcock, who attended
Manchester Grammar School, became the chief flying instructor of BOAC, in the late 1940s, and had learned to fly with his brother, and later lived at Lytham St Annes. Albert, another brother, later lived in Prestwich. He first became interested in flying at the age of 17. His first job was at the Empress Motor Works in Manchester. In 1910 he became an assistant to Works Manager Charles Fletcher, an early Manchester aviator and Norman Crossland, a motor engineer and founder of Manchester Aero Club. It was during this period that Alcock met the Frenchman Maurice Ducrocq who was both a demonstration pilot and UK sales representative for aero engines made by the Italian
Spirito Mario Viale. Ducrocq took Alcock on as a mechanic at the
Brooklands aerodrome, Surrey, where he learned to fly at Ducrocq's flying school, gaining his pilot's licence there in November 1912. Alcock then joined the
Sunbeam Motor Car Company as a racing pilot. By summer 1914 he was proficient enough to compete in a Hendon-Birmingham-Manchester and return air race, flying a
Farman biplane. He landed at
Trafford Park Aerodrome and flew back to Hendon the same day. ==Military career==