1916, aged 19

 1920

b. 27 April 1897 in London

RFC and RAF in WWI, then an "exceptional" test pilot for Nieuport and General Aircraft Co Ltd, of Cricklewood.

Elected a Member of the RAeC in October 1921; at the time, the firm of 'Tait-Cox and James, Test Pilots' were extremely busy, and "could find work for half-a-dozen pilots", if they could find them.

In fact Leslie, followed by Jimmie, broke the British Speed record in 1921.

Joined Major Jack Savage's 'Sky-writers' in 1922 - as did Mogens L Bramson, Cyril Turner, G A Lingham, G F Bradley, D A Shepperson, C R McMullin, E D C Herne, Sydney St Barbe, Charles Collyer (US), Marttin Rudolph (Germany), and W von Feilitzsch (Germany).

Rejoined the RAF in 1926, and left in Jan 1935, to become a "Technical Mechanical Engineering Liason Officer"

Joined Plessey after WWII and d. Oct 1959 - Maidenhead, Berks.