The relationship between HM and Lord Porchester led to newspapers of the time dubbing them Porchy and Bess.
Churchill's former residence Chartwell is extensively used throughout this episode. The country house near Westerham, Kent, in South East England, was his home for over 40 years. In October 1964, he left it for the last time, dying at his London home on 24 January 1965. After Churchill's death, Lady Churchill surrendered her rights to the house, and it was opened to the public by the National Trust in 1966.
Besides painting more than 500 pictures throughout his lifetime, Churchill was a prolific writer, publishing a novel, two biographies, three volumes of memoirs, several histories, and numerous press articles. In recognition of his "mastery of historical and biographical description" and oratorial output, Churchill received the Nobel Prize in Literature in 1953.
For his interpretation of Winston Churchill, John Lithgow won a Primetime Emmy Award for Outstanding Supporting Actor in a Drama Series (2017) and a Screen Actors Guild Awards for Outstanding Performance by a Male Actor in a Drama Series (2017).
Queen Elizabeth says to Porchey she will give him a direct telephone line so he could reach her without the necessity of being passed through secretaries. In fact, Porchey was one of just two people who had Queen's mobile phone number. The other one is Princess Anne, Queen's daughter. Upon Porchey's death, the Queen's number was passed to his son George Herbert, 8th Earl of Carnarvon as he took the Queen's racing manager position from his late father.