In 1926, following a loss of £18,041 the previous year, the Great Western Railway sought to close the canal by obtaining a Ministry of Transport Order, but the move was resisted and the company charged with improving its maintenance of the canal. After the Second World War the Transport Act of 1947 meant that control of the canal passed to the British Transport Commission, but by the 1950s large sections had been closed because of poor lock maintenance following a breach in the bank west of the Avoncliff Aqueduct. Claverton Pumping Station ceased operation in 1952, after the failure of a number of the pitwheel's oak teeth. The British Transport Commission installed a centrifugal pump to maintain the statutory minimum water level.