What were the main events and the result of centralization in England?

In the 11th century, a dominant class was formed in England. It consisted of the Norman conquerors, who needed a state apparatus to protect their interests. Therefore, the English feudal state was formed early and the royal power was very strong. All conquerors, for the sake of preserving their territories, were forced to swear allegiance to the king. William the Conqueror managed to subjugate not only the population, but also the feudal lords. This is the difference between England and other feudal states in Europe: all the knights, bishops and barons took an oath of allegiance to the king. Such centralization was beneficial to the feudal lords themselves, because it guaranteed the suppression of any discontent of the common people. Finally, state administration took shape in England by the 13th century. The result of centralization in England was not only the strengthening of the power of the king and his entourage of magnates (or officials), but also the creation of a single judicial, financial and state system.