King Charles is set to break a royal tradition this year during the Trooping the Colour parade, it has been reported.

The monarch is expected to travel by carriage instead of riding on horseback, according to the Times.

Charles, who’s currently undergoing treatment for an undisclosed type of cancer, was given permission by his doctors to return to public duties last month after a short break.

Buckingham Palace said that any future engagements involving the King “will be adapted where necessary” to accommodate his recovery.

Earlier this week, he made his grand return to a major investiture at Windsor Castle, which was the latest in a number of public-facing duties the King has undertaken in recent days.

Now as his official birthday parade in June looms, a source told the outlet: “The King is most likely to be taking part in Trooping via carriage this year but a final decision is yet to be made.”

Trooping the Colour is held every year as an official birthday event for the monarch, even though Charles’s actual birthday is on November 14.

It is one of the biggest military ceremonies of the year, featuring more than 1,200 soldiers and musicians plus more than 200 horses.

Last year, Charles became the first monarch in more than 30 years to take part in Trooping the Colour on horseback.

The King took the royal salute as Colonel in Chief of the Household Division’s seven regiments during the ceremony, staged on Horse Guards Parade, as members of the royal family and 8,000 spectators watched.

The late Queen Elizabeth last rode out for the parade in 1986.

Meanwhile, despite Charles’s return to royal duties, a palace source claimed that the public should not expect a “full summer schedule” from him as he recovers from treatment.