Original: The first subway route to be withdrawn was route 31 , on 1 October 1950 , with the remaining two routes , 33 and 35 , being withdrawn after service on Saturday , 5 April 1952 , the last public services being ` specials ' on the Sunday , shortly after midnight .
Simplified: Routes 33 and 35 were closed at the end of service on Saturday 5 April 1952 . The last public services through the subway were ` specials ' which ran on the Sunday , shortly after midnight .