Across two seasons of “The Crown,” Josh O’Connor has delivered a critically acclaimed and award-winning performance as Prince Charles. In this interview, the young Brit discusses his nuanced and complex portrayal of the future King, and he shares his initial reservations about taking on the role. He talks about the care he took to avoid mimicry; his rapport with co-star Emma Corrin, who plays Princess Diana; and how he thought about the distinct shift in the way the audience relates to Charles between the two seasons. O’Connor also reflects on the course of his career to date, including his drama school years, his breakout role in “God’s Own Country,” and his latest projects, which include “Romeo and Juliet.” And he shares why supporting the mental health charity Mind is so important to him.