What could @HeathrowAirport learn from the Blitz?

The image below looks rather familiar from all the images at Heathrow Airport over the last few days (thankfully I was able to get home, and not get stuck there).  The story has just run on BBC London News, investigating Christmas 1940 down the Tube. Initially customers had to break down barriers as officials weren't letting them in, then they commandeered space (nights only!), anything they could use for coverings, etc., originally chaos, but then…