I had heard "back in the day", that an officer had become engaged to a non-commissioned WAAF who left the service just before their summer wedding. Unfortunately, she used to work for the PMC who refused the officer permission to bring her to the Summer Ball until they were formally married. The result was that the said officer went into the local town and hired a couple of "escorts" to accompany him to the Mess for the function - with one on each arm, he went to the PMC's group and introduced them to him in front of the local dignitaries, adding why he had to bring these two girls who were allowed to attend and not his fiancé.