article_snippet: On arrival, the couple were welcomed with a  Royal Salute fired from the cannons at the Tower of London during which a total of 62 shots were fired - the basic 21-gun Royal Salute, plus another 20 because the Tower is a royal palace and a further 21 for the City of London.
article_snippet: The couple's arrival was announced with a Royal Salute fired from  the Tower of London .
article_snippet: High powered: Prince Richard of Gloucester (right) and his wife Birgitte (second left)  were also there .
highlights_snippet: Were joined by Prince Richard, Duke of Gloucester, and Prince Richard wife Birgitte .