Tory MP Sir Iain Duncan Smith tells the crowd that some politicians are “hiding their heads” and “don’t want to be seen protesting this”.

He added: “Well, those of us that are here today will stand against tyranny.

“We have a major problem. We have China, North Korea, Russia, and Iran, in a new axis that threatens the very freedoms that we in the United Kingdom believe, and many of you have fled here.

“We say to President Xi, who said only a few months ago, that his purpose, with those allies, was to have a new world order.

“That new world order will be of tyranny, of repression, of an end of freedom, an end to the right to protest.

“No judicial rights in face of the law. and total control by the centre. What do we say to that proposal? No!”

He adds: “Why doesn’t the government listen and do the right thing? This is the wrong embassy in the wrong place at the wrong time for the wrong country.”