Charles was met with calls to quit and accusations of corruption at protests outside Durham Cathedral today.
Anti-monarchy group Republic staged the protest at the Maundy service and were there to greet the king when he arrived.
Durham University had attempted to block access to the Cathedral site to protesters earlier in the day, but they eventually relented in the face of strong criticism by Republic.
Republic has pledged to continue to protest at royal events - with today being the annual Maundy Service.
The Maundy service is seen as particularly cynical of the royals, as they hand out a few pounds in Maundy money while costing half a billion pounds in public funding.
The trip is also likely to cost local people in Durham thousands of pounds.
Speaking for Republic, Graham Smith said today:
"Charles hands out just a few pounds to some local people, while charging the people of Durham thousands and costing the British taxpayer over half a billion."
"This is a tone-deaf tradition. While the public are facing welfare cuts and rising living costs, Charles and his family will cost us well over half a billion pounds a year."
"Today wasn't just about the royals though. Durham University attempted multiple times to block protestors from entering the Cathedral site. This was an attack on our free speech and our right to protest."
"In the end, we were able to protest Charles's arrival - but what Durham University attempted to do was unacceptable."
"Republic's campaign continues unabated and the protests will continue for as long as the monarchy continues. Attitudes are changing, and we will win."
PHOTOS and VIDEOS are available here.
Do you like this page?