This Mod adds additional UK squadrons to the Logbook, for the British Army, the Royal Navy's Fleet Air Arm, and the Royal Air Force.
Version 2.5.6 (just as sequencing thing, it should work with any 2.5 version) some updated imagery for the logbook and a few new squadrons for FAA in WWII (moderately pointless but...), this is now pretty much complete from my POV, but, if you have squadrons you want included and you have the imagery PM me and I will see what I can do.
I added in a couple of Fictional Squadrons, and the overlooked much to my chagrin 3 Commando Brigade Air Squadron and CHF, and thanks to @Mordants 736 Squadron FAA I also found 664 and 651 AAC.