Where can I find a list of capitalisation rules for pure British writing?
Is there any quality English orthography book that contains rules for capitalising in pure British English? I’ve noticed that an American newspaper capitalises every word in the title of an article (except special words like “to”), but a British newspaper does not. I’m pretty confused. I’ve managed to find just an orthography book which apparently describes American rules. Where can I find a British version?
I think your best bet would be to find or purchase a "style guide" or "style manual" from a respected British newspaper. Every newspaper has one since the style guides for things like headlines or articles vary from publication to publication. Simply put a Google search for "BBC style guide" or "BBC style manual" and see what you get!
I have looked at a few British style-guides online (focusing on those that are free!) and a good place to start might be the Guardian and Observer style guide at https://www.theguardian.com/info/series/guardian-and-observer-style-guide.