Mark Bonham-Carter Weds -- Mr. Mark Bonham Carter and his bride leaving Chelsea Register office after the wedding ceremony to-day.Mr. Mark Bonham Carter, a friend of Princess Margaret, was married at Chelsea Register Office, London, to-day (Thursday) to Leslie; Lady St. Just.He is the 33-year-old son of Sir Maurice and Lady Violet Bonham-Carter of 21, Hyde Park Square, W., and is director of a publishing firm.The bride is the 25-year-old, daughter of the late Mr. Conde Nast, the American publisher, and Mrs. Rex Benson of 30, Cadogan Place, *****. June 30, 1955.