After Christianity (and the King Arthur stories) there was also the british law system of Equity, which was derived from the Ten Commandments, and of course it was also, like the Druid days, very much ungovernable. The king was a judge, not a general in their system, which was derived from the old jewish systems, most especially the judaism that gave us 9000 years of stateless Jericho.

Equity was also the foundation law system of the USA as well.

When you go into courts these days, USA or any former british colonies, you wouldn't know there ever had been such a thing as Equity jurisdiction. The judges are trained to trick you into statutory jurisdiction which makes them judge, jury and executioner, and nothing is a crime, and everything is a crime.

Between 11th and 15th centuries, england was taken over by the germanic royal family and with Victoria's illegal marriage to Albert, in a real sense, the nation of Britain died, it became a franchise of the corrupted european aristocracy.