The English have a very special style when it comes to fashion. Depending on how a pair of boots and leggings are worn, a scarf or hat, trousers, dresses, accessories, etc... it all has a certain British effort put into it.
Hard to describe, but I can really notice the difference when arriving in England, or comparing the dress of the French or Italian for example. I think the British put more of an effort into their clothes, and clothes are outfits, and outfits become a style. It's a nice change.