Ironically, the poster was never distributed in England during the war, and was only recently discovered in a British shop.
Today it's on posters of all sorts of colors that might have surprised Brits back then (turquoise, hot pink, lime green). On design boards such as Apartment Therapy, it was first beloved and now decried as ubiquitous.
Still, I love it, both sentiment and design. It remains relevant seventy years later.