The King almost stepped on one of the eggs, but he appeared unfazed and continued his walkabout.
Police have arrested a man after eggs were thrown at the King and Queen Consort on a walkabout in York.
According to North Yorkshire Police, a 23-year-old man was arrested on suspicion of a public order offense and is being questioned.
Officers said a “well-rehearsed” security operation was in place for the royal couple’s visit to ensure their safety.
The projectiles narrowly missed the King as the royals greeted people on the city’s Micklegate Bar.
People in the crowd booed and shouted “God save the King” and “shame on you”.
The protester was heard to shout “this country was built on the blood of slaves” as he was detained.
The King nearly stepped in one of the eggs but appeared unruffled and continued walking.
The royals are in York for a number of engagements including unveiling a statue of the Queen – the first to be installed since her death.
The visit is part of a traditional ceremony in which the monarch is officially welcomed to York by the Lord Mayor.
It was last carried out by the Queen in 2012.
Police said several roads were closed in the city centre to allow the royal convoy to pass and to ensure the safety of spectators.