Style somewhat similar to the work of F Gordon Crosby. Also noted are Illustration of a Frazer Nash in advertisement Motor Sport magazine January 1935. See full page illustrations in Motor Sport June & August 1937. Stewart Middlemiss has found a birth and Surrey death record of a John Martin Barnicot (1909 - 1977), this could well be the same person.
Illustration of Alfa Romeo Tipo B at speed at the Rheims Circuit signed and dated September 1934. Illustration courtesy of Bonhams auctions
Illustration of Bira from Motor Sport magazine June 1937. Thanks to Stuart Middlemiss
Illustration of Raymond Mays from Motor Sport magazine August 1937 - Thanks to Stuart Middlemiss.