Eh, perhaps your insights on British propaganda leading up to and during World War I and maybe later how the tropes and images of that propaganda continued on into World War 2 and beyond.
Do you have a particular year in which you'd like me to start? Sometime before the Hun raping nuns and rendering corpses into soap, I presume. Before Kitchener's "For King and Country" too (I used Kitchener in a story, once, and had to research him pretty thoroughly). Maybe at the death of Queen Victoria? Is that convenient for you? Perhaps earlier? With
The Battle of Dorking, perhaps? In case you haven't read it (I have, and mentioned it in a published essay on military science fiction), that was a British novel in which Britain is invaded by a technologically-advanced, militaristic, unnamed (but German speaking) "Enemy," that subjugates England and breaks up the Empire. That was followed by other invasion novels -- I'll look them up if you're interested -- and newspaper accounts claiming that Germans were non-whites who were flooding England with spies, burglars, and murderers.
Are you interested in the history of Free Trade v. Protectionism in the late 19th century? That fits in with the history of anti-German propaganda in the UK. The UK supported Free Trade, while both Germany and the USA were Protectionist. In the USA we saw a lot of anti-British propaganda, as top-hatted John Bull tried to starve American workers. The UK passed a trademark bill that required items made in Germany be marked as to their origin, so the public could refuse to buy them. More on all of this later, if you're still interested in finding out about British propaganda.
While I'm doing that, maybe you can explain why it is that learning how to tell if a man is talking rot is a bad thing?
I will inform you that many, if not most, of those upper class twits did not apply themselves and work hard and intelligently, and in consequence did not receive an education. I will further inform you that many Canadians and Newfoundlanders apparently didn't get much of an education either, since they themselves seemed unable to tell when someone was talking rot.