Thanks everyone for your assistance thus far. Some very good info here.
It appears my bloke actually IS on the list but not in the capacity I'd been lead to believe. Certainly his profile on linked in, and personal stories leads you down a different path to what his category on the RAF list would lead you to believe.
Some follow up questions if I may.
Was it possible to be an RAF airman whilst an RAF Volunteer Reserve (Training Branch) officer? (I think some people can see where this is leading).
Would time as a RAF VR(T) role count towards a Long Service and Good Conduct medal?
Is it possible to have two different service numbers? IE If you were in for a bit, left for a few years and then came back? Or be given your RAF airman one initially?
Is there any way to check RAF airman records?
Is there any way to check eligibility of Gulf War I medals?
Were RAF VR(T) officers awarded the Diamond and Golden Jubilee coronation medals? Did you have to be a member at the date of attestation or could you still get it if you had done the five years but left a few years earlier?
How far through the 'emergency services' did the issue of the medals extend?
Thanks again everyone for your assistance.