As a result of the problems with the original design, in summer 1542 work recommenced on the castle, well after the initial invasion scare was over, lasting until August 1543. The decision to rectify the problems with the castle may have been taken by King Henry himself. Oxenbridge appears to have stayed on as the pay master and acted as the master of the works, with von Haschenperg remaining in his role as engineer almost until the end of the project, despite the difficulties with his earlier work. The cost of the second phase of work was much higher than the first, around £10,000.