JF Ptak Science Books Quick Post
This is a news photo service photograph from the very beginning of post-WWI. It was released the day after the war ended (or at least the day after the armistice was signed) and reiterated the situation that there were many women workers in industries throughout England1, and that they would be there for some time to come–or at least until the soldiers returned. 
Notes:
1. For example, something on the order of 80% of munitions workers 1917/18 were women.