a number of vacant ecclesiastical offices, administering at one point sixteen vacant bishoprics or abbeys. His many duties have led to him being considered the first Chief Justiciar of England. During Rufus's reign, Ranulf supervised the construction of the first stone bridge in London and oversaw the construction of the king's hall at Westminster. In 1099 he was rewarded with the bishopric of Durham.

On the death of Rufus in 1100, Ranulf was imprisoned