I’ve been re-reading some of Ngaio Marsh’s detective novels recently, with Chief Detective-Inspector Roderick Alleyn and his sidekick Detective-Inspector Fox.
When it comes to the first interviews after the murder, one of the suspects will generally make a comment about Fox’s footwear, along the lines of “you’re obviously a policeman - just look at your boots”. On the other hand, the suspects will often be surprised that Alleyn is a policeman because his clothes, and particularly his shoes, are so elegant. I assume that Fox is not in uniform - it’s just his boots that give him away.
So what is it about British policemen’s boots that is (or used to be) so distinctive? I’ve wandered around looking at the boots that NSW police officers wear, and they don’t look all that much different from other men’s boots.