If I’m playing Allies myself and doing teh heavy EUS strategy I’ll play UK this way:
R1: 2 fighters, save 8. Move the guys from Scotland to London, possibly move the Gibraltar fighter there as well depending on what I’m doing with Italy (I’ve taken a liking to joining the UK Med fleet with the French ships and making Italy attack me). UK should collect 42 (convoy raid in Canada is possible of course).
R2: (If Sealion is in play) I’ll buy 6 inf, an art and two fighters (truth be told, I welcome a Sealion from Germany).
If the Sealion is not on I’ll buy something like a carrier, one fighter, two DD or two carriers and a fighter if I still have a ship or two left on the board from round 1. I’ll either set up the ships in Canada or in the SZ adjacent to both the London and Scotland AB in order to utilize as much scrambling as possible.
R3: The sea should be safe to build in by now so I’ll get started on transports.
By the end of turn 3 you’re looking at the US force mentioned in a post above and the UK having a couple loaded carriers, tranny’s and a huge air force. On turn 4 you can take your pick of Norway, Normandy, Southern France, etc.