I mean, this is a matter of interpretation, but to me "Empire" reads like a caricature of British imperialism. Bruce evokes all the pathos of British grandeur but shows us it belongs to a mindset of people who are completely full of themselves ("royalty and dignitaries, brandy and cigars"), have the vision of a limitless empire ("to India they say, magic carpet float away"), but eventually all their bombast drags them down to their doom. The language is very British, but if there's one thing I know, or thought to know, about Bruce, it's that when he talks about Britain and British ambitions, he likes to be very tongue-in-cheek. I thought "Empire" was such great storytelling because Bruce uses the R101 disaster as a metaphor for the British Empire as a whole.
That's why it is so difficult for me to handle the completely unironic take on Churchill found in "Darkest Hour" as coming from Bruce. It celebrates the same pompous glorification that "Empire" parodies.