Violet 813, Red 850......Red 650 even, and Green 100 are no longer remembered......
Ah best beloved, you must be one of the newer (younger
) fellows.
To be really old (comme moi) you have to remember the
2 figure codes, so BBK was Red 85, Stan Jello was Green 10 etc.
The ones ending in 0 were (active or disused) airfields, while 01 was the HQ, so originally ALDZ was Violet 10, not to be confused with HQNI which was Violet 01.
Yes - of course it
was confused, and with those two LSs in particular, it meant that a number of VIPs had their aircraft (never RAF - Scouts' Honour
) waiting at the wrong place. So firstly V10 becomes V81, and then the proliferation of LSs there (again, a background of VVIP cock-ups), led to the third digit there and for neatness, everywhere else. (Mostly with just a 0 at the end.)
History lesson over, class dismissed ......
