It will be interesting to see the difference between ITL & OTL for the losses at Dunkirk:
The naval casualties look (at first glance) to be lower than OTL but I think the aircraft losses are probably higher.
Yeah but the next FAA plane in your TL is Folland's design/re-design based on the Gloster F.5/34 (the Goshawk/Spartan). Lets hope that Folland goes on to design the Gnat.
They could cover both the vital Rosyth & Clyde Dockyards from HMS Gannet (RNAS Prestwick) if it was built a couple of years early (OTL it was built in 1940).