He has surpassed the King of Thailand Bhumibol Adulyadej, who reigned for 70 years and 126 days between 1927 and 2016. Louis XIV of France remains the longest-serving monarch, reigning for 72 years and 110 days from 1643 to 1715. The queen, who was crowned in 1953, became the longest-serving British monarch in September 2015, surpassing her great-great-grandmother Queen Victoria. The 96-year-old celebrated her Platinum Jubilee earlier this month, with four days of parades, street parties and other events across the UK and Commonwealth. He later thanked the nation in a letter, saying it was “humbled and deeply moved” and that “this renewed sense of camaraderie will be felt for many years to come.” Movement problems prevented her from attending many of the events, but she appeared on the balcony of Buckingham Palace at the end of the Jubilee Competition as the extended weekend of bank holidays came to an end. Read more: The Queen’s journey as a cultural image The best jubilee photos from all over the UK In her letter, she said: “When it comes to how to mark 70 years as your queen, there is no guide to follow. “It’s really a first. “But I was humiliated and deeply moved by the fact that so many people took to the streets to celebrate my Platinum Jubilee.”