Protesters gathered at Commons Green, just outside Parliament, and marched towards Downing Street.
The demonstrators described the move to suspend parliament as a coup and called for Johnson to resign.
Amelia Womack, deputy leader of the Green party, was one of many opposition politicians present.
We have a representative democracy and by suspending parliament, you are removing people’s democratic right.”.
Jane Keane, 54, said she had been protesting every day since Michael Gove announced the government would start making preparations for a no-deal.
“It is a complete contradiction to what parliament has said three times.
“We’re here to protest against the downgrading of democracy that is happening in the UK at the moment ... »