Hi ColinHi Chris,
This is off the subject, but what is the badge in your avatar image? My dad had one like that from his WWII service. He was in the Reconnaissance Corps and kept those little Bren gun carriers running.
So, it is the Class one (or Artificer’s badge) of the REME and, as it was formed in 1942, your old chap was one of the fathers of the Corps mate!
I spent from 16 to 40 in the REME and after a career in infantry (Armoured and foot) ended up with Recce in the end as well (Light Dragoon’s LAD)..
Arte et Marte