Everything about this photo is perfect, its absurdly English, because Hockney and Beaton are sort of english archetypes. It was taken by Peter Schlesinger and there is a great interview in the Guardian explaining how it came about. He describes it as, ‘I like the way their poses contrast – they’re doing different things yet they somehow complement each other. It was accidental: I just happened to click at that millisecond and catch a fleeting rather joyous moment. Looking back today, I feel lucky to have known such wonderful people.’