1. THE COMMONWEALTH OF NATIONS Headquarters: Marlborough House , London , UK Official language: English Membership: 53 sovereign states Leaders - Head of the Commonwealth Queen Elizabeth II - Secretary- General Kamalesh Sharma Appointed 24 November 2007 and took office 1 April 2008 Establishment - Balfour Declaration 18 November 1926 - Statute of Westminster 11 December 1931 - London Declaration 28 April 1949 Area - Total 31,462,574 km² 12,147,768 sq mi Population - 2005 estimate1,921,974,000
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