Theresa May then avoided a "loss" in parliament due to the pro-European camp in her own party.
He added: 'All it shows is that, while the vehicle is careering towards the Brexit cliff-edge, senior Conservatives are fighting over what song to play on the stereo.' The prime minister wasn't even in the Commons to hear the address because she was answering questions about Brexit to a committee of MPs.
Johnson, figurehead of the Brexit campaign in the 2016 referendum, urged May to change her Brexit strategy in a scathing assessment of the government's handling of the negotiations.
The government said being part of an EU customs union would prevent it from striking global trade deals, won the vote by 307 to 301, a slim majority for May of just 6.
Turmoil over Brexit plans has hit the pound.
"We want to see the government work closely with the EMA through a formal agreement to continue to support and participate in their assessments for medicines approvals".
"Facing more committed and hardline opponents - and more of them - than I had".
Britain's Prime Minister Theresa May walks to deliver a speech as she opens the Farnborough Airshow on July 16, 2018.
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After a layup, he hit a terrific third shot to about three feet and tapped in for par, capping a third-round 66. Joining them was Tommy Fleetwood, who dropped three shots in two holes on the back nine on his way to a 71.
Johnson said the vision set out by May in her Lancaster House speech in January 2017 for a "strong independent, self-governing Britain" with a focus on having independent trade and regulation had never been turned into a firm negotiating position.
May's government was also forced to abandon a plan to start parliament's summer recess five days early, in a possible bid to head of a vote of no confidence, after much criticism.
The prime minister secured her cabinet's backing for her Brexit plan at Chequers more than a week ago only to see two cabinet minister - Boris Johnson and David Davis - resign, and several junior ministers go, amid deep disagreements within the Conservatives over how closely the United Kingdom should remain aligned with the European Union after Brexit.
But former Ukip leader Nigel Farage said, while the speech had been "well delivered", it was "hopeless to expect Mrs May to deliver on any of it".
"With great sadness I must say that I have lost faith in the fact that it implements the outcome of the referendum", - stated in the text of the letter sent to the steering Committee of the Conservative party (called the "1922 Committee").
But by setting a deadline for May to change her approach, she said he appeared to be telling MPs that it would be "in their hands" if she didn't.
But her plan has pleased few on either side, compounding the divisions within he Conservative Party that have so far frustrated progress in talks with the EU.