As allied nations speaking a common tongue, I imagine there were a great number of liaisons between British women and American soldiers, airmen and sailors.
Most British men were serving overseas. Over 1 million US troops were stationed in the UK.
Young, English women had left their home to work in the cities...
How many of these women became mothers and what happened to the offspring?
Did the US allow these children to become U.S. citizens?
Did (m)any of these relationships eventually become marriages?
How did this affect the demographics of the UK i.e. did the loss of thousands of women who left the UK as war-brides negatively impact Britain?