The best candid photos from King Charles' coronation weekend, according to a royal photographer

On Thursday, the Prince and Princess of Wales surprised commuters on the London Underground's Elizabeth Line as they traveled to the Dog & Duck Pub on public transportation.

At the pub, they sampled some Kingmaker beer and spoke to workers about how the business was preparing for King Charles' coronation.

Jackson told Insider that this royal engagement had an "amazing atmosphere" and was "when the coronation weekend really began."

For the first time in 900 years, international monarchs were invited to a British coronation. Charles broke from tradition by welcoming royals from Monaco, Sweden, the Netherlands, Denmark, Norway, Japan, Greece, Spain, and Jordan, among other countries.

Jackson said "it was amazing to see" royals from all over the world at the event, adding that the the king and queen of Bhutan in particular "looked incredible." The photographer went on to say that he had accompanied the Prince and Princess of Wales on a trip to Bhutan in 2016.

Jackson did not attend the coronation ceremony at Westminster Abbey since he was stationed at Buckingham Palace to await the king and queen's arrival and photograph them on the balcony.

He took this photo of Charles and Camilla right before they went outside to greet the crowds gathered below, with royal pages and staff bustling around them.

"It was nice to also capture the king and the queen in the moment before they stepped out onto the balcony, the light behind me and before the doors had opened," he said. "That was a rare moment, so that was pretty special."

Jackson also told Insider he captured a "never-before-seen angle" of the royal couple by standing behind them as they walked onto the Buckingham Palace balcony, providing a behind-the-scenes view of the long-awaited moment.

"They were obviously enjoying Lionel Richie. I think that was one of the favorites," Jackson said, of Charles and Camilla.

"We watched the king dancing with the queen," Jackson added. "I've photographed him for 20 years all around the world, and I've seen him do a lot of dancing, and he's got some pretty good moves."

William gave a speech, broadcast by the BBC, highlighting his father's dedication to public service and saying that Queen Elizabeth II "would be a very proud mother."

"When the king arrived, he just sort of touched William on the arm as he walked past," Jackson said. "It was just a lovely speech and a lovely moment."

The Big Help Out — part of the coronation celebrations across the UK — encouraged people to volunteer in their communities on Monday, which was a bank holiday in the UK.

Sophie, Duchess of Edinburgh, encountered a "very sweet puppy" named Lucy at the Blind Association Training Center that Jackson said he "really wanted to take home."