This procession is the moment that many royal supporters have waited all day for -- the King and Queen, followed by a huge parade of soldiers, musicians and horses, are passing by cheering crowds on their way to Buckingham Palace.
The Gold State Coach that carries the monarch and his wife is incredibly heavy -- weighing 4 tons -- meaning that it can only travel at walking pace.
Ahead of the celebrations, Sally Goodsir, the Royal Collection Trust’s curator of decorative arts, said: “It is nearly four meters tall. It’s over seven meters long. It weighs four tons. Because of that it can only be used at a walking pace, which really adds to the majesty and stateliness of this great royal procession."
"There are very few monarchies which have retained coaches working of this age, and therefore it’s an incredibly special thing to see," she added.
It’s covered in painted panels “that exemplify” what George III, who was monarch when the coach was built in 1762, believed he would bring to the nation. “Protecting the arts such as architecture and sculpture; protecting peace in this nation, there’s figures of Mars and Minerva, the classical gods of war, but they’re not at war, they’re actually holding the British Crown aloft. So, there’s lots of messages and symbolism,” Goodsir said.