Help me not get DOW'ed

[unmerged(106562)]

I'm playing as Japan in the 36 scenario. It's now 39 and I'm building up my forces waiting for the germans to start the war in europe, however around May 39 the british always DOW me which I think is really annoying since I kind of want to play a more historical game. Luckily I have a savegame just a few days before the brits DOW so I'm hoping I can alter my savegame somehow to stop them, I tried lowering my belligerence, but that didn't work.
What can I do?

 

[Ericus1]

What have you done so far? There may be a very good reason the UK is DoW you, so know what and who you've conquered can be helpful in figuring out what it is.

 

[unmerged(106562)]

I figured it out, just had to lower my belligerence to 0. thanks though.

 

[OscarIsaiah]

Perhaps declaring war on Tibet or something got the British DOW.

 

[Steg]

That's weird and ahistorical, I think it's perfectly fine to force a white peace with acceptall for that one because that's never happened me even when I did have high belligerence