I know I have seen an allocation of service numbers for Auxiliary Air Force Sqns Pre war for airman

So 800 would be x SqN
801 y Sqn etc

But canít find it now any idea if the Sqn for

So which AAF Sqns would this guy have served with?

Charles Kethel McKenzie AAF 800211 (and also #803179):

I think 800xxx would be 600 Sqn which would make sense as he lived near RAf Northolt