Now that we (finally) have a poster for 'The King's Speech' that doesn't make the movie look like a comedy of manners with a side order of romantic shenanigans, I'd like to propose:
Text contrast and density needs adjustment but that aside I like black and white for this poster. Seems fitting.
Red lettering on a yellow background is pretty hot -- seems anachronistic, or at least jarring for a period piece. Going B&W solves these issues. Might consider a sepia tone to make it more 'England during The Big One'.