[kurlannaiskos]

don't I wish there were a site, then I would also have the answers I seek.
from what little info I have is this :
AH 571 through AH 602 were used operationally by no. 601 Sqdn RAF.
ones that I can match serial with squadron code letter are :
AH 571 not coded but was the usual aircraft flown by sqdn leader E.J. Gracie.
AH 583 UF J
AH 585 UF O
AH 586 UF N
AH 589 UF L
AH 595 UF M
AH 601 also not coded and was used by E.J. Gracie for photographic purposes and was kept clean for this.
most profiles of the Airacobra Mk 1 are of this aircraft.
AH 602 UF W "Winston" this aircraft had Winston written in white on the left nose (gun bay) for a while ,but this was removed before the big photo-op where most of the photos of these aircraft come from.

one other plane was coded UF C but I don't have a serial number to go with it.

I can highly recommend
"Camouflage and Markings"
Mohawk,Tomahawk and Airacobra
by Ducimus publishing
it is a very good source for this information.

as soon as I re-locate my copy I can provide some more info such as pilots,as it list a few.