LONDON, ENGLAND - SEPTEMBER 09: (left to right) Chief Executive of The Trust Dr Astrid Bonfield, former Prime Minister Sir John Major, the Countess of Wessex and His Excellency Mr Gordon Campbell High Commissioner of Canada at The Royal Society in central London during an event hosted by The Queen Elizabeth Diamond Jubilee Trust to mark the day Queen Elizabeth II became the longest serving Monarch on September 9, 2015 in London, England.  (Photo by Rick Findler - WPA Pool / Getty Images)