Tony Armstrong-Jones

A fashionable society photographer, all charm and undone top button, who catches Princess Margaret's eye at a dinner party. Bohemian, quick-witted, and visibly uninterested in playing by court rules, he offers Margaret something rare: a man who treats her as a woman to be seduced rather than a royal to be managed.

The show casts him as a jolt of modernity against palace stuffiness, and both actors lean into that friction — Matthew Goode's early scenes crackle with flirtatious nerve, while Ben Daniels later brings a cooler, more guarded charisma. Together they trace how the same magnetism that draws Margaret in can curdle once it's expected to live inside a marriage.