Don't dunk your biscuits

Wartime Britain, and it's all shoulders to the wheel to defeat the Germans. Agnes Woodbridge, who has always fancies herself married to a bank manager rather than a clerk, surprises everyone by robustly organizing wartime evacuees into the community. Will her new emancipated ideas extend to her own family's morals? Indeed, are these long-enshrined moral attitudes nothing more than concern over what people think of her?