LONDON — Tim Pigott-Smith, a versatile British actor who recently played Prince Charles on stage and screen, has died at the age of 70. The actor’s agent, John Grant, said Pigott-Smith died Friday. Grant called him “one of the great actors of his generation … a gentleman and a true friend.” Pigott-Smith was already a veteran of stage and screen when he came to international attention as a sadistic police officer in British-controlled India in the 1980s miniseries “The Jewel in the Crown.” The show became a global sensation, and Pigott-Smith said it “changed my life.” Born in Rugby, central England, in 1946, Pigott-Smith trained at the Bristol Old Vic theater school and built up a diverse career on stage, television and film.