What measures did William the Conqueror take to strengthen his power and prevent fragmentation in England?

After the conquest of England, William and his people needed to be shown that they were united and required unity from the entire population. All feudal lords had to personally swear allegiance to the king. The strictest discipline was maintained. The government of William the Conqueror had to, if necessary, quickly suppress the riots and actions of the disaffected, especially the peasants. Thus, the power was centralized, the main decisions were made by the royal council under the “supervision” of the king.