How many women worked in the UK during world war 2?

As in World War One, women played a vital part in this country's success in World War Two. But, as with World War One, women at the end of World War Two, found that the advances they had made were greatly reduced when the soldiers returned from fighting abroad.
At the end of World War Two, those women who had found alternate employment from the normal for women, lost their jobs. The returning soldiers had to be found jobs and many wanted society to return to normal. Therefore by 1939, many young girls found employment in domestic service - 2 million of them, just as had happened in 1914. Wages were still only 25p a week.
When women found employment in the Civil Service, in teaching and in medicine they had to leave when they got married.