This is the specific criteria this group had to conform to. Who are they and where would they work? "Must be under twenty-one years of age, with quick reactions, good at figures - and female". These were the prerequisites for members of? This secret section in World War Two has never had the recognition it deserves. Nevertheless, it was one of the greatest aids to protection of Britain of the whole war. The reason that very few people even today have heard about this is the extreme secrecy which the personnel maintained about its work and its influences. Only in recent years have the restrictions been lifted and wartime members of this close group been freed from the silence imposed upon them.