It is notable that T.O.M. Sopwith played down Herbert Smith's role in the design of the Camel in:
camel | herbert smith | harry hawker | 1979 | 0032 | Flight Archive instead Smith is portrayed as being a compiler of others inputs. One wonders if there was some bad feeling between the two?
He was not exactly low profile, one site even alleging his work with Mitsubishi in the 20s started the Japanese on the road to Pearl Harbor (a bit over the top!).
This may not be so far from the truth, although it has to be borne in mind that the Japanese fought on the allied side in the First World War, and that Smith was not alone as a Western designer in Japan in the early 20s. Eiichiro Sekigawa's 'Japanese Military Aviation' lists four manufacturers employing Western designers or having close links with Western manufacturers.
By coincidence, the company bought by BAe to ensure corporate compliance after the Saudi bribery scandal was 'Herbert Smith LLC'!