Regular fortnightly commentaries from the Aerodromes in Flight magazine show that Tone continues with regular flying training/practice at London Aerodrome but with the WH Ewen School, (Flight; 28 June 1913: p703) and the final record of him doing this is mid September 1913 (Flight; 27 Sept 1913: p1074) https://www.gracesguide.co.uk/William_Hugh_Ewen