Crowds walk along Whitehall which will be part of the Royal Wedding Procession Route

Crowds walk along Whitehall which will be part of the Royal Wedding Procession Route, in central London April 27, 2011. Britain's Prince William will marry Kate Middleton at Westminster Abbey on April 29th. LONDON, ENGLAND - APRIL 27: Media and TV crews speak to Royal fans camped outside Westminster Abbey waiting for the start of the Royal Wedding on April 27, 2011 in London, England. With only