To be fair, the BBC style guide[1] isn't totally consistent either, though in general, initialisms are upper-case and acronyms are title-case (as we see here).

To be fair, the BBC style guide[1] isn't totally consistent either, though in general, initialisms are upper-case and acronyms are title-case (as we see here). [1]: https://www.bbc.co.uk/academy/en/articles/art20130702112133530 https://www.bbc.co.uk/academy/en/articles/art201307021121335...