BBC News presenter Clive Myrie will tonight blame the storming of the US Capitol in part on the country’s “toxic media environment with no rules” and warn of the risks of the UK following suit.

In a lecture in tribute to the late Sir Harold Evans, Myrie will point to the unregulated US broadcast media which allows opinionated hosts of Fox News, CNN and other US networks to claim climate change is a liberal invention or describe the President as an “obese turtle flailing in the hot sun”.

“Harmless banter maybe, except Tucker Carlson and Anderson Cooper are among the most popular television news hosts in America,” he will say.