The Norman legal system was somewhat different from the Anglo-Saxon one but it carried over a lot of the strongest ideas from the already strong Anglo-Saxon legal code
The forest laws - trees could no longer be cut down, people were forbidden to own dogs or bows and arrows, and those caught hunting deer were severely punished
Norman French became the official language used in court procedures, and all court records were kept in Latin
Fines were no longer paid to the victim or their family but to the king's officials
The Normans introduced church courts, which were separate courts used for churchmen and tended to be more lenient
William introduced fines like the murdrum and increased the number of executions to keep the population under control, as the Normans were heavily outnumbered by the Saxons