King Charles III and Queen Camilla will celebrate their 20th wedding anniversary in Rome on Wednesday, a union that once scandalised public opinion and shook the monarchy. The couple, who have known each other for over 50 years,

Royal fans are just learning why the King and Queen use the letter 'R' when signing something off, as the old tradition was used on their most recent post.

King Charles and his wife Queen Camilla arrived in Italy on Monday for a four-day state visit during which the British monarch will address the Italian parliament in Rome. It is the 17th official visit by Charles to Italy and his first overseas trip this year as he continues to undergo treatment for cancer.