Boris Johnson becomes UK Prime Minister

10:10 a.m. ET, July 24, 2019

Boris Johnson arrives at Buckingham Palace to become prime minister

Boris Johnson is about to officially become Britain’s new leader.

He’s entered Buckingham Palace and is meeting the Queen, who will ask if he is able to form a government. That’s as per tradition -- but it’s a somewhat loaded question on this occasion, since Johnson has a wafer-thin working majority in Parliament of just two seats.

Nonetheless, Johnson will say yes and the Queen will anoint him prime minister. The meeting should be brief -- but it will be the first of the weekly sessions that Johnson will hold with the monarch.

The Queen’s first prime minister was Winston Churchill, over whom Johnson has always welcomed comparisons. Johnson is her 14th leader since her ascension in 1952.

10:12 a.m. ET, July 24, 2019

Johnson's motorcade interrupted by protesters

Boris Johnson is being driven up The Mall to Buckingham Palace, but a line of protesters has just jumped onto the road to stop him. The motorcade briefly came to a halt while a police offer moved the climate activists aside.

10:10 a.m. ET, July 24, 2019

Britain currently has no prime minister

Theresa May has resigned to the Queen, but Boris Johnson is yet to meet the monarch and ask to form a government – so right now, Britain is leaderless.

That means all crime is temporarily legal in the country.*

*It doesn’t actually mean this.  

10:08 a.m. ET, July 24, 2019

Theresa May leaves Buckingham Palace after resigning as prime minister

Theresa May has wrapped up her meeting with the Queen, having tendered her resignation. "Her Majesty was graciously pleased to accept," Buckingham Palace said.

Boris Johnson will now be driven to the Palace to accept the Queen’s offer to become prime minister and form a government.

10:04 a.m. ET, July 24, 2019

May's chief of staff leaves "proud" and "frustrated"

Theresa May's chief of staff, Gavin Barwell, has just posted this on Twitter.

9:39 a.m. ET, July 24, 2019

May arrives to resign at Buckingham Palace

The quick journey from Downing Street is over, and Theresa May has arrived at Buckingham Palace.

Outside, a handful of anti-Brexit protesters are holding up a banner demanding a second referendum.

May will officially resign to the Queen and recommend Boris Johnson as her successor. It's not known how long the meeting will last -- but once May leaves, she'll be a backbencher.

10:36 a.m. ET, July 24, 2019

May was interrupted by a Stop Brexit protester

Theresa May's final speech was interrupted by the "Stop Brexit" activist who has been a fixture outside Parliament for the past three years.

"That wasn't me," her husband Philip joked about the remark. "The answer to that is, I think not," May added.

The Mays then stood on the steps of Number 10 with their arms around each other as they waved to the media assembled opposite. The pair then entered a waiting car to leave Downing Street for the last time.