“Considering he spent the entire year undergoing regular cancer treatment, the king set the pace when it comes to royal duty for the House of Windsor,” Treble told The Mirror.

She continued: “There’s a common belief that Anne is the hardest-working royal. I beg to differ. Though the Princess Royal did the most days of work (186) in 2025, it was her big brother who did the largest number of engagements.”
For many years, Princess Anne has topped the rankings for royal engagements and has often been described as the “hardest-working royal”. When asked in January whether retirement might be an option, she told the BBC it “isn’t really an option”.
Royal Engagement Rankings for 2025
According to the annual figures, Prince Edward, Duke of Edinburgh, placed third with 313 engagements, making him the only other royal to surpass the 300 mark.
Sophie, Duchess of Edinburgh, followed in fourth place with 235 engagements. Queen Camilla ranked fifth with 228 duties, while the Duke of Gloucester took sixth with 212 engagements.