Audible boos were heard among cheers as King Charles III and Queen Consort Camilla visited Cardiff, Wales

• King Charles III and Queen Consort Camilla arrived in Cardiff, Wales, on Friday and were met with audible boos.
• As the King greeted the crowds, one man said, "Charles, while we struggle to heat our homes we have to pay for your parade.

King Charles III and Queen Consort Camilla visited Cardiff, Wales, on Friday and were met with audible boos as their limousine arrived in the city center.

In a video from ITV Wales, audible boos mingled with the well-wishers' cheers as the royal couple arrived at Cardiff Castle to attend a reception hosted by the Welsh government.

Among the enthusiastic flag-waving crowds, some anti-monarchist protesters held signs: "Not my King, not my Prince."

Before becoming King, Charles held the title of Prince of Wales. With the title going to the heir to the throne, Prince William became the Prince of Wales when his father took the title of King.

Later, as King Charles III personally greeted crowds in Cardiff, one man said, "Charles, whilst we struggle to heat our homes, we have to pay for your parade.

"The taxpayer pays £100 million for you, what for?" The man continues before he says "nid fy Mrenin," which is Welsh for "not my King."

The King ignored the man's comments and walked away.

While there has been a massive outpouring of support for the British royal family in the days following the death of Queen Elizabeth II, some opponents of the monarchy have sought to make their voices heard.

A number of protesters have been arrested, including Symon Hill, 45, who told Insider that he was arrested after shouting "Who elected him?" and "A head of state is being imposed without our consent" during a proclamation event in Oxford for King Charles III.

"I don't think it's about me. It's a bigger issue about freedom of expression, about freedom from arbitrary arrest, about the right to challenge people of wealth and power in our country," Hill, who describes himself as a left-wing Christian author and activist, told Insider.

"I have been to protests before. I'm not naive about the chances of getting arrested. I'd have understood if I'd been disrupting the ceremony or blocking the road, but I literally called out a couple of sentences," Hill said.