 In March 1908 , the off @-@ peak shuttle service began to use the western tunnel on the branch , crossing between the two branch tunnels south of Holborn . Low usage led to the withdrawal of the second peak @-@ hour shuttle and the eastern tunnel was taken out of use in 1914 . Sunday services ended in April 1917 and , in August of the same year , the eastern tunnel and the bay platform at Holborn were formally closed . Passenger numbers on the branch remained low : when the branch was considered for closure in 1929 , its annual usage was 1 @,@ 069 @,@ 650 and takings were £ 4 @,@ 500 . The branch was again considered for closure in 1933 , but remained open . 
