Jack, I expect there are many many people in the UK with absolutely no experience of the theme. That's one of the random thrills of thematic crosswords, surely? If I looked back on the past year of EV and Inquisitor, there's many a theme that was wasted on me - some I found boring, some I just gritted my teeth and forced myself to learn a bit more about the subject (only so I could finish the puzzle).
And yes, I did enjoy this well-crafted puzzle, by the way!