The palace is getting ready for the Queen's state visit to the United States to mark the 400th anniversary of the first permanent English settlement in the Americas, at Jamestown, Virginia. Preparations include a private dinner for prominent American ex-pats at Buckingham Palace and a portrait session with the respected US photographer, Annie Leibovitz. On the other side of the Atlantic, President George W Bush - the tenth president to meet the Queen - and his wife Laura prepare to host the only white-tie banquet of his presidency.