The Diamond Jubilee of Elizabeth II of the United Kingdom reaches its peak with a pageant on the River Thames.
Elizabeth II addresses her Commonwealth subjects in her annual Royal Christmas Message, referring to the 2012 Summer Olympics in London and the "humbling" experience of her diamond jubilee celebrations. Her speech – the first to be broadcast in 3D – does not include mention the recently-announced pregnancy of Catherine, Duchess of Cambridge, wife of her eldest grandson.
Queen Elizabeth II of the United Kingdom attends a Cabinet meeting for the first time to receive a gift in honour of her Diamond Jubilee, including having an area of the British Antarctic Territory named for her. It is believed to be the first time that a British monarch has attended a Cabinet meeting in peace-time since Queen Victoria's reign.
Queen Elizabeth II marks the 60th anniversary of her becoming the monarch of the United Kingdom and seven other sovereign states in the Commonwealth of Nations with events to celebrate her Diamond Jubilee set for later in the year.