LONDON - DEC 4: Sentry on guard duty inside the Tower of London, December 4, 2012 in London. The Queen's Guard are  responsible of guarding all royal palaces.
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Royalty-free stock photo ID: 121679701

LONDON - DEC 4: Sentry on guard duty inside the Tower of London, December 4, 2012 in London. The Queen's Guard are responsible of guarding all royal palaces.