What is the state of England in The Coming of Arthur from Idylls of the King?

England is in ruin because of constant warring among its various kings. Much of the land is uninhabited and overrun by wild, dangerous beasts who even sneak into the cities and harass the residents. Leodogran's kingdom is assailed in turn by the Romans, a fellow English king named Uriel, and finally a band of heathen barbarians.