A string of other Conservatives have queued up to criticise Johnson, with Theresa May saying he used the wrong language and Lord Sheikh calling for the whip to be withdrawn.
The party's code of conduct says that MPs and other holders of public office should "not use their position to bully, abuse, victimise, harass or unlawfully discriminate against others" and "foster respect and tolerance".
NYC becomes first U.S. city to impose Uber/Lyft cap
But Councilwoman Laurie Cumbo, a Democrat, said Uber will still be available despite the moratorium on new cars. A new report ordered by New York City regulators calls for a $17.22 minimum wage for ride-hail drivers.
He added: "The retrogressive Islamic clergy has succeeded in persuading ill-informed Muslims through suspect secondary sources that God wants women to cover their faces, when in reality it is a toxic patriarchy controlling women".
But the former top diplomat, who has a reputation for causing controversy and quit May's cabinet last month in protest at her Brexit plan, refused to back down.
Johnson is yet to issue a response. "I will defend the basic principle which is the right to choose", added the Janaan actor.
Rand Paul Delivers Trump Letter To Putin
Senator Rand Paul (R-KY) walks from Senate Republican weekly policy luncheon on Capitol Hill in Washington, U.S., March 6, 2018. The White House said Wednesday President Trump wrote a letter of introduction for Republican Sen.
"We have to call it out".
Metropolitan Police Commissioner Cressida Dick said Mr Johnson's comments would not "reach the bar" for a criminal offence.
"Johnson did not go far enough".
"It's not the job of the Prime Minister to tell backbenchers what to do".
Tesla take-private skepticism grows after Elon Musk's funding claim
Trading in Tesla was halted for an hour and a half on Tuesday afternoon, by which time the stock had soared to $370. Tesla said on Wednesday the discussions had addressed the issue of how to fund such a deal, but gave no details.
Boris Johnson and Armeena Khan.