I think the UK has to be patient and let the Japanese step in it. In the early turns the UK player may want to get as many boots on the ground as possible. If they don’t attack Japan then they can enjoy one NO (+5 IPC) for holding Hong Kong and Malaya, they can work toward their second NO for holding the four islands (Java, Sumatra, Borneo & Celebes), and they can position themselves to help China keep the Burma road open after Japan makes the first move. Unfortunately, UK can not help China keep the road open before turn number three, but after Japan’s second turn you should be able to turn on the heat. It doesn’t matter if Japan attacks you after their second turn or third turn; the US gets the same money. It only matters if they attack on their first or second turn.
Likewise, I think the ANZAC forces need to do the same thing. Be patient and let Japan step in it. But boots and get them on your islands. Especially for ANZAC, it is probably much more efficient to buy infantry than artillery and tanks and stuff. ANZACs big problem is they need a lot of transports to do anything and transports can’t be used a cannon fodder in this game. Therefore, they will need DDs and SSs.
If possible, I think it would be understandable to bait Japan with a DD or an unprotected bomber or something. As long as the US loses less than 40IPCs in the bait, they are fine cause they will get a net +.
Japan needs to do two things on their third turn if possible (assuming they didn’t fall into taking the bait), they need to take the Philippines and try and take Hawaii if possible. This will deny the US the most income. Next they need to take one island from the UK group and one from the ANZAC group. This will reduce the combined income of the Allies by 20 IPCs. Japan should be able to close the Burma road and take Hong Kong too. Now the Allies have lost 30 IPCs. Things look very balanced at this point. The Allies have to work together to stop Japan from many more gains.