I believe it was a scouting mission, but I’m not sure there is much more recorded than that

I think we might be talking about completely different things

I’ve watched it a little bit, very informative but not a huge fan of his delivery style.

Japanese troops also landed in WA but turned back before encountering anyone

https://en.wikipedia.org/wiki/MS_St.Louis#The%22Voyage_of_the_Damned%22

There was definitely racism, though at that point in time, there wasn't any racism enshrined in law (though some laws did come about over a decade later regarding immigration from non-white parts of the commonwealth) however there was no protections from racism. Racism in Britain was very much on a case by case basis and while I don't want to diminish how it was in the early 40s, it was considerably worse come the 50s as a reaction to several large waves off immigration (which were also spread across more cities than previous waves) which also turned racism into a domestic political issue.

Also https://en.wikipedia.org/wiki/Battle_of_Bamber_Bridge

You might dis/like this - though it's worth noting there was segregation on the USA bases in the UK and they requested that business impose segregation, though that request was generally met with negative response both from government and locals.

https://youtu.be/SyYSBBE1DFw?t=1518

You were responding to a comment about POW camps though

What camp are you talking about? I don’t know of any that mixed POWs with non military internment

You might want to clarify if you mean the rulers of Egypt (often not Egyptian) or the local populace.