Which actor staring in Darkest hour, has been active in television and film since 1964?
Darkest Hour (film):  Ben Mendelsohn, Kristin Scott Thomas, Lily James, Stephen Dillane, and Ronald Pickup also star. Ronald Pickup: Ronald Alfred Pickup (born 7 June 1940) is an English actor who has been active in television and film since 1964.
Ronald Pickup