Being agressive as the UK is recuired, but tempting japan into attacking you where he can is just plain stupid.
Things that you can do depend heavy on what japan did and did not. So there is no fixed you should do X or Y.
There are some guidelines taht the allies should follow regarding how to handle japan.
Simple ground rules:
A : Japan needs ground units in china and the money islands.
B : Japan needs factories and transports to get said units where they need them.
C : Japan has a huge bigass fleet that and airforce that you cannot stand up to. Dont be on the recieving end if it.
Being agressive is that you need to attack japan, not defend. This negates their bigest asset their airforce.
After japan there are 3 countries before it can go again, repairs on capital ships will not happen in between.
Assist China and the US by taking out small groups of land forces and transports.
Always try to trade money islands with Anzac, every time you take an island as anzac your income the next round should be 14 so you spend 14 and get 14 back you can keep that up forever.
It is also costing japan 14 to get it back ( you did sink their transport right ) but those units are 2 turns. That is 4 less land units in china ( 2 for the transport, 2 in the transport )
When you got a choice between sending an anzac or a US sub to kill a transpot, anzac should do it unless it brings them under 2 attack ships. its just lovely to clear a blocker with the US and then have 1 anzac sub sink 3 japan transports 😄
When japan splits its fleet, use 2 or 3 strike waves to kill it off, carriers are nice to take hits but the next wave will face not only a damaged carrier but no planes. 3 carries with planes are formidable, 3 damaged carrires are dead.
If at any point in time you can trade the US+UK+Anzac fleet for the majority of the japan fleet ( you will always miss out the odd destroyer ) do it. Anzac is close to the money islands and US can spend more on fleet then japan can. IF they are blocked out of the money islands for a few turns japan is in huge trouble.
Help out UK-Pac. as US try to get malaya or borneo back from japan. You dont get the cash but the income can be much more efficiently spend by UK-Pac. They dont need transports to get the boots on the ground.
Dont throw away UK-PAc airforce ( unless to take out the Japan main fleet ). 2 inf are worthless, 2 inf + 2 fighters + 1 tactical can trade some inf every turn.
China killing 2-3 units a turn, UK-Pac killing 2-3 units a turn, Anzac taking a money island every turn that is 34 income drained every turn from japan.