These are couple purchases that I like to make. UK starts with 31 ipcs. Your card says 30, but annoyingly this is incorrect. Same deal with Germany they have 41 not 40. I’d just mark it up with a sharpie, so you don’t forget
;)
But back to UK. The two builds I like most are…
2 artillery 1 infantry in India, 2 fighters in UK.
3 tanks in India, 1 fighter and 1 infantry in UK.
Those are my go to builds, but there a few others as well, if I can trust the Americans to fully coordinate, or if I am playing USA as well.
3 tanks in India, 1 bomber in UK save 1 ipc.
3 tanks in India save 13 ipcs.
2 artillery 1 infantry in India, save 20 ipcs.
3 infantry in India save 22 ipcs.
The guiding principle in this case is to max place 3 hitpoints in India, with something left over to give alternative round 2 build options. Unless you take territories with a transport sacrifice you will end the UKs first turn with the same amount you started 31 ipcs. France or Norway (if the Atlantic transport survives G1 and you want to sacrifice) or Borneo with a Pacific transport sacrifice, or East Indies with a risky 37 hit plus territory take, can increase this amount, but otherwise if you want a different build option in round 2 it requires saving something.