The charity dinner was attended by HRH Princess Galyani Vadhana, sister of Thailand's constitutional monarch, King Bhumibol Adulyadej.

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Upon losing her HRH title, Diana, Princess of Wales lost the right to be bowed, bobbed and curtseyed to.

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The portrait, called HRH The Duchess of Cambridge, is on display as part of the National Portrait Gallery's Contemporary Collections.

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Hockney gifted an image of the monarch's initials created on a iPad, while Emin submitted a monoprint portrait, HRH Royal Britannia.

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In January it was revealed HRH The Duchess of Cornwall had become the first official Patron of the Cornwall Air Ambulance Trust.

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Saudi billionaire and Chairman of Kingdom Holdings, HRH Prince Alwaleed Bin Talal Bin AbdulAziz Alsaud has signified his interest to invest in Nigeria.

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In the same year that Britain's last prime minister but one was born, HRH Queen Elizabeth II was being crowned in fur, ermine and a very heavy crown, set, in some pictures, at a slightly jaunty angle.

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George V had decreed that the titles Royal Highness (HRH) and prince and princess should be restricted to the children of the sovereign, the children of the sovereign's sons, and the eldest son of the eldest son of the Prince of Wales.

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The opening address is given by HRH Prince Philippe of Belgium and eminent scientists and decision makers from the industry are participating in this Closing Ceremony, in particular Ada Yonath, Chemistry Nobel Laureate in 2009 and Andrew Liveris, Chief Executive Officer of The Dow Chemical Company.

UNESCO: Social and Human Sciences