Why are so many places in the U.K. so dirty?

From [Cassius Dio](https://en.wikipedia.org/wiki/Cassius_Dio)'s [Roman History](https://www.ancienttexts.org/library/celtic/ctexts/classical_cassius_dio.html) (c. 2nd century CE): Book LXXVII: War in Britain > 12. There are two principal races of the Britons, the Caledonians and the Maeatae, and the names of the others have been merged in these two. The Maeatae live next to the cross-wall which cuts the island in half, and the Caledonians are beyond them. Both tribes inhabit wild and waterless mountains and desolate and swampy plains, and possess neither walls, cities, nor tilled fields, but live on their flocks, wild game, and certain fruits; for they do not touch the fish which are there found in immense and inexhaustible quantities. They dwell in tents, naked and unshod, possess their women in common, and in common rear all the offspring. > >Their form of rule is democratic for the most part, and they are very fond of plundering; consequently they choose their boldest men as rulers. They go into battle in chariots, and have small, swift horses; there are also foot-soldiers, very swift in running and very firm in standing their ground. For arms they have a shield and a short spear, with a bronze apple attached to the end of the spear-shaft, so that when it is shaken it may clash and terrify the enemy; and they also have dagger. > >They can endure hunger and cold and any kind of hardship; for they plunge into the swamps and exist there for many days with only their heads above water, and in the forests they support themselves upon bark and roots, and for all emergencies they prepare a certain kind of food, the eating of a small portion of which, the size of a bean, prevents them from feeling either hunger or thirst. Such is the general character of the island of Britain such are the inhabitants of at least the hostile part of it. 1800 years is a lot less time than people think (twenty-ish long lifetimes?), and definitely not enough time to change the character or nature of an entire people. The inherent bias of the author aside, we're still essentially the same swamp-dwelling hostiles that we've always been