After consulting various publications I still can't find a date when the conductresses finished up after World War One. By the middle of 1917 there were 1,260 women employed by Birmingham Corporation Transport (not all as conductresses obviously) and I would imagine this number remained much the same until the armistice of 11th November 1918. After this with men returning from the war and replacing the women I would guess that it was probably sometime in early 1919 when the conductresses finished up but it would be nice to find out for sure. Of course the conductresses returned again in 1939 and this time they were there to stay.