By Stephen Castle For one generation, it was the symbol of all that was wrong with the United States and the focus of protest against an unpopular American war. More recently, the elite of London have flocked there for convivial parties, particularly on U.S. election nights.

The U.S. embassy in London may move south of the Thames, ending a 200-year-old history in Grosvenor Square in the heart of fashionable Mayfair.

By Anne Penketh The American embassy is to be moved out of central London to the South Bank of the Thames, ending a 200-year association with Grosvenor Square.

LONDON (Reuters) - U.S. President George Bush may be unconvinced about the human contribution to global warming but his diplomats in Britain are going green with a vengeance to cut both costs and carbon emissions.