In a move that has angered environmentalists, Britain's future trade ambassador is set to deliver an opening speech at Bio2001 , the world's largest trade fair organised for the biotechnology industry, on 25 June. Prince Andrew's visit is at the express request of the event's organisers, and has also prompted rumours of an ideological split within Buckingham Palace. His elder brother Charles, the Prince of Wales, has openly condemned GM technology and agriculture and ploughed money into organic farming ventures.