A superb use of emotion (nostalgia) in an English commercial for Hovis bread. No wonder British copywriters are now in such demand in the United States. The procession which started with Leslie Pearl, Clifford Field and the author is gathering steam. Barry Day, the Creative Head at McCann- Erickson’s headquarters in New York is an Englishman, as is Norman Berry, the Creative Head of Ogilvy & Mather in New York.