Brian,
One (34148) P/O Hugh Lowther Dawson is mentioned as being a member of No.57 (B) Sqn RAF, in March of 1935:
https://57squadron.wordpress.com/between-the-wars/ (p.22 of 38 PDF).
Brief mention of a F/Lt H. L. Dawson, here:
https://discovery.nationalarchives.g...ls/r/C16359500
Oxford I L9654 -
8 FTS 3.2.39 (became 8 SFTS 3.9.39).
8 SFTS.
Failed to take-off from Montrose due to frost and hit signal box 17.10.39.
Damaged Beyond Repair.
See: The Oxford, Consul & Envoy File/Hamlin/A-B,2001/p.71.
A tad more on your man:
http://nzetc.victoria.ac.nz/tm/schol...2-2RAF-c9.html - scroll down to W/Cdr H. L. Dawson DFC (2 mentions - pp.8-9 of 55 PDF).
Col.