Danny42C
I've now read further into this thread and come across the discussion of RAFVR numbers being 7 digits (your post #5765 page 289).
The envelope containing my dad's "A Message of Welcome" is addressed to 1850386 A.C.2. Hibbert, N.F., (R.A.F.V.R.).
From this I assume he would have volunteered at the earliest opportunity, would that have been on his 18th birthday in August 1942? And what does A.C.2 signify? Lowest of the low I presume!
Best wished
Jeremy