 While administering England for Rufus , Ranulf also supervised construction projects . Under his management , the first stone bridge in London was constructed . Ranulf also built a wall around the White Tower in London , enclosing the inner ward . A new hall at Westminster was also built , of which the outside walls of Westminster Hall are still surviving . He started building the church at Christchurch at Twynham , which he had been granted by Rufus . After Rufus ' death , the church was confiscated from Ranulf , and building work ceased . The crypts and transepts of the current church , however , date from Ranulf 's construction work . 
