Ellie McFadden, 20, from Glasgow, said: “We are here because we seek to protect our freedoms and rights, because we seek to protect this green and pleasant land which is the inheritance of us all.
“Last year, at [climate change conference] Cop 26 in Glasgow, Queen Elizabeth said: ‘The time for words has moved to the time for action.”’
Ms McFadden added: “The science is clear. The demand is simple: just stop new oil and gas. It’s a piece of cake.”
The King had planned to travel to Egypt for Cop27, but has since cancelled plans to do so after it was claimed former prime minister Liz Truss warned him against attending.
It follows a similar protest earlier this month involving Van Gogh’s Sunflowers at the National Gallery.
Activists threw tomato soup over the famous painting, which has since been cleaned and put back on display.
The gallery said the painting was covered by glass and therefore not damaged.
