Hope this is the right section, as it's not the blitz. In an article in todays paper Patsy Cashman reminisces on a christmas later in the war, when a prisoner of war was invited for christmas day
https://www.guardian.co.uk/money/2010/nov/27/memories-of-christmas-austerity
https://www.guardian.co.uk/money/2010/nov/27/memories-of-christmas-austerity