Post-war RAF vehicle markings

[10FM68]

I'm sure that this topic has cropped up before, but trawling through the archive I can't find it.  It is probably a question for @Ted Angus:  what do the wing markings on RAF vehicles post-war stand for?  I know 'T' will be Training, 'M' Maintenance, 'F' Fighter and 'B' Bomber Commands, but what about the others - 'H' for example?  My second question is then what is the significance of the digits after the '/'.  My final question is related to the (1960s?) custom of abbreviations inside a circle on cab doors, such as 'LAA'.  'SP' I understand to be RAF station Steamer Point - Aden, but that's the only one I know (if I'm right, of course)!  Any advice would be much appreciated.

[ted angus]

H tech training command. T flying training command . F fighter command . B bomber command. V transport command. As the RAF reduced some new ones appeared.  B and F Combined and became Str strike comand.   LAA. On door was. A RAF Regt marking Light Anti Aircraft.The digit was the group number. Commands were divided into groups.

Edited June 27, 2023 by ted angus

[10FM68]

6 hours ago, ted angus said:

H tech training command. T flying training command . F fighter command . B bomber command. V transport command. As the RAF reduced some new ones appeared.  B and F Combined and became Str strike comand.   LAA. On door was. A RAF Regt marking Light Anti Aircraft.The digit was the group number. Commands were divided into groups.

Very many thanks for this, Ted.  V & H were, in particular, taxing me!