Frank II liked Spain. Philip's capital was gayer, warmer, and more sanitary than London. It was intoxicating to enjoy the best of both courts. It proved also extremely remunerative: the shared consciousness of Frank I and II was by far the quickest communicational link between the two rival countries, and as such was worth money. Not that Frank revealed his secret to a soul, but he let it be known he had a fleet of capable spies who moved without risk of detection between England and Spain. Burly Lord Burleigh beamed upon him. So did the Duke of Medina Sidonia.

Let's Be Frank (1957)