Sarah Smith
Scotland editor

Image source, Getty Images

First Minister of Scotland Nicola Sturgeon says she wants to find ways of working with Boris Johnson but it is going to be very tricky - she is an implacable opponent of Brexit.

There is not much they are going to see eye to eye on and tensions are already very high.

As for Scottish Conservatives, there is scepticism about whether Mr Johnson will help electorally.

Scottish Conservative leader Ruth Davidson could not have been cooler when she was receiving the news he had become leader - she reiterated that she had not voted for him.

Tory activists are clear that he needs to come to Scotland early in his premiership, which we understand he is going to do.

Today Programme
BBC Radio 4

The Today programme has spoken to two businessmen about the incoming prime minister and Brexit.

Pro-Brexit businessman John Mills, the chief executive of JML Group, says taking a no-deal Brexit off the table would "make it much more difficult to get movement from the EU".

"It is very difficult to judge accurately how difficult no deal would be - a lot is going to depend on what mini deals will be put in place," he adds.

Meanwhile, remainer Paul Drechsler - the former president of the Confederation of British Industry - says "the idea of preparing for a no-deal Brexit is like saying I'm going to drive into a wall at 100mph and I will prepare by putting on a seat belt".

"It is an empty threat that no serious businessman would ever use."

Norman Smith
Assistant political editor

I think Jeremy Hunt [Boris Johnson's rival in the leadership race] might leave the cabinet.

He turned down the offer of the defence secretary post and it is not clear to me he is going to be offered one of the big posts he thinks he deserves.

There is a lot of speculation that Priti Patel might get the home secretary job.

BBC Radio 5 Live
Wake Up to Money

Image source, Getty Images

Will Walker-Arnott, from wealth management company Charles Stanley, said the pound did not move much yesterday when Boris Johnson was confirmed as the next prime minister.

But, he said, the pound has fallen in recent weeks and gilts - UK government bonds - had been rallying as they are seen as a "safe haven".

"We want to see some meat on the bone from Boris," he said. "We haven't really seen any indication of how he's going to get out of the EU by the 31 October".

Mr Walker-Arnott is hoping for more information later today. But, he said, if there is a disorderly Brexit, the pound could fall to $1.14, $1.15.

He said the historic trading level against the dollar over the last 30 years was closer to $1.50, $1.60.

Katya Adler
Europe editor

In the often-divisive Brexit world of "them and us" it's easy to forget that, beyond Brexit, EU leaders still see the UK as a close partner and ally.

Their messages of congratulation to Boris Johnson from across Europe on Tuesday - notably from French President Emmanuel Macron - are a timely reminder of that.

Whatever happens with Brexit, France, Germany, Poland et al still very much hope to work closely with the UK on international issues like Russia sanctions, Iran and human rights protection. On the world stage the EU considers the UK one of the good guys.

But EU leaders' welcoming tone - a diplomatic courtesy, at the end of the day - should not be misconstrued when it comes to Brexit and a Boris Johnson premiership.

EU invitations to the new prime minister to work with them "constructively" do not signal a willingness to accept whatever the new prime minister might demand in terms of changes to the Brexit deal.

Read more from Katya

Some ministers, including Chancellor Philip Hammond, have already said they will resign when Boris Johnson becomes prime minister.

If they do, they may or may not want to take lessons from the communications manager of Labour MP Jared O'Mara.

Gareth Arnold used his own boss' Twitter account to resign in a flurry of angry tweets - one of which accused the Sheffield Hallam MP of showing "inexcusable contempt" for constituents.

Read more here.

In a tweet, external congratulating Boris Johnson, the EU's Brexit negotiator Michel Barnier said he was looking forward "to facilitate the ratification of the withdrawal agreement and achieve an orderly Brexit".

The BBC's Brussels reporter Adam Fleming says this "suggests there is stuff that can be done to garnish the withdrawal agreement".

"It might be a case of rebranding things that were offered to Theresa May.

"Maybe most of the action will be about rewriting the political declaration - the separate document that sketches out the future relationship between the UK and the EU.

"I think we'll expect major surgery there."

Adam Fleming
BBC Brussels reporter

They're putting on a polite face. There has been a lot of the ritual tweets from EU leaders and EU institutions.

People who would normally offer quite mean, little anecdotes about Boris Johnson - either from his time as a journalist in Brussels or as foreign secretary - have shut up and been diplomatic about him.

The talk from officials and diplomats was less about him and more about the constraints on him... the fact that he faces the same divided House of Commons and the same potential electoral arithmetic.

Image source, EPA

Boris Johnson is due to become the 55th person to be prime minister of Great Britain and Northern Ireland.

In charge of a budget of around £800bn, the UK's 150,000 troops and the power to press the nuclear button, it is a role that carries supreme responsibility.

Like starting any new job, a few administrative tasks must be completed before they can get to work.

So what is Mr Johnson facing on his first day in office?

Laurence Sleator from the BBC Political Research Unit explains.

Laura Kuenssberg
BBC political editor

Boris Johnson's political inheritance has all the makings of a disaster.

He has no Commons majority. There is no mandate from the general public - remember this election has only been decided by Tory members.

There are policy problems everywhere in sight - whether that's trying to solve the conundrums of Brexit with a reluctant EU and a divided party or trying to address some of the deep-seated problems at home.

And just as among his fans there is genuine excitement that he will, at last, be in No 10, there is scepticism and disbelief from the opposition parties, and double-sided concerns in his own party.

Read more from Laura

As you would expect, the figure of Boris Johnson looms large on the front pages this morning.

Alongside the headline "I'm the dude", the Daily Telegraph , externalcarries a picture of the new prime minister saluting photographers on the steps of Conservative Party headquarters.

The Daily Express , externalcarries a picture of a determined looking Mr Johnson, with the headline: "Hang on to your hats...here comes Boris."

And the Daily Mirror , externalhas a series of pictures of the new prime minister in various comical poses with the headline: "It's really not funny any more".

Read more here

• At 12:00 BST Theresa May takes part in her last Prime Minister's Questions
• After lunch she will make a short farewell speech outside No 10 before travelling to see the Queen to tender her resignation
• Boris Johnson will then arrive for an audience at Buckingham Palace where he will be invited to form a government
• After that he will make a speech in Downing Street before entering the building for the first time as prime minister
• Later, he will begin announcing his most senior cabinet appointments, such as chancellor, home secretary and foreign secretary, and will make and take calls from other world leaders

Good morning and welcome to our live coverage as Boris Johnson officially takes over as prime minister.

This afternoon he will visit Buckingham Palace where he will be invited to form a government.

Later, he will begin announcing his most senior cabinet appointments, such as chancellor, home secretary and foreign secretary.

Image source, Getty Images

We are going to bring our live coverage to a close now.

Today, Boris Johnson was confirmed as the new leader of the Conservative Party. Tomorrow, he will formally take over as prime minister and begin to reveal his new cabinet.

So what can we expect to happen and when?

Wednesday 12:00 BST onwards: Theresa May will take part in her last Prime Minister's Questions. After lunch she will make a short farewell speech outside No 10 before travelling to see the Queen to tender her resignation.

Mrs May will leave Buckingham Palace in a different vehicle to the one she arrived in - she will no longer be allowed to travel in the PM's official car.

Mr Johnson will then arrive for an audience at the palace where he will be invited to form a government - this process is known formally as "kissing hands", though former PM John Major said in his autobiography: “The phrase is traditional and outdated - the Queen’s hand is not kissed.”

Mr Johnson will then leave in the PM's official car - an armoured Jaguar.

After that he will make a speech outside Downing Street before being clapped in to the building, where he will meet his new staff.

He will then receive briefings from the National Security Adviser and heads of intelligence agencies.

Later, he will begin announcing his most senior cabinet appointments, such as chancellor, home secretary and foreign secretary, and will make and take his first calls from other world leaders.

Thursday: Mr Johnson is expected to make a statement to Parliament about his Brexit strategy and take questions from MPs. Parliament will break up for its summer recess later.

The new PM will continue announcing his new cabinet.

Boris Johnson's appearances on panel show Have I Got News For You were for many people their first taste of the now prime minister. But one of the show's team captains, Private Eye editor Ian Hislop, told BBC Radio 4's PM that Mr Johnson was less than impressive when he had to present the show.

Boris Johnson is the UK's new prime minister. He reminds some Americans of a certain US politician.

Brexit Party leader Nigel Farage has told BBC New York correspondent Nick Bryant that he would consider doing a deal with the Tories in order to deliver Brexit.