Conservative London Mayor candidate Shaun Bailey has slated his Labour rival for having “nothing to say” over ongoing Extinction Rebellion protests.
Mr Bailey said Sadiq Khan had been as "quiet as a mouse" over the demonstrations, which have brought the capital to a standstill.
"The first thing that needs to be said is ‘where is Sadiq Khan?’ He’s been as quiet as a mouse," he told talkRADIO's Julia Hartley-Brewer.
“What Londoners need is someone who’s going to stand up for them. This is a time where you would expect the Mayor to appear and do something."
At least 280 people have been arrested since the rallies - now into their second day - began.
Some determined activists glued themselves to the Department for Transport while around 200 camped outside Westminster overnight and thousands continue to block major roads and bridges in the area.
Mr Bailey said that while the demonstrations were “really good natured”, the protesters do not have a “right to disrupt other people’s lives”.
Instead he called for activists to use democratic tools to “go through it the long way”.
“We need a much more reasonable debate here and that debate could be started by a Mayor stepping up.”
Mr Khan yesterday tweeted a video outlining six steps London had taken to address the issue of climate change.
He wrote: “As Mayor, I declared a #ClimateEmergency for our city because we simply can’t wait any longer to take action on reducing emissions.”