A Child's History of England by Charles Dickens

The Romans had scarcely gone away from Britain, when the Britons began to wish they had never left it. For, the Romans being gone, and the Britons being much reduced in numbers by their long wars, the Picts and Scots came pouring in, over the broken and unguarded wall of Severus, in swarms. They plundered the richest towns, and killed the people; and came back so often for more booty and more slaughter, that the unfortunate Britons lived a life of terror. As if the Picts and Scots were not bad enough on land, the Saxons attacked the islanders by sea; and, as if something more were still wanting to make them miserable, they quarrelled bitterly among themselves as to what prayers they ought to say, and how they ought to say them. The priests, being very angry with one another on these questions, cursed one another in the heartiest manner; and (uncommonly like the old Druids) cursed all the people whom they could not persuade.

So, altogether, the Britons were very badly off, you may believe.