Neale Hanvey and Kenny MacAskill are ordered to leave the chamber following the rowdy scenes.

The two MPs represent Scottish seats and are members of the Alba Party, having left the SNP.

Boris Johnson gets to his feet amid rowdy cheers from the benches - Speaker Lindsay Hoyle orders MPs to "shut up a minute".

"I will not tolerate such behaviour" the Speaker angrily adds. "Shut up or get out" he repeats.

Boris Johnson is on his feet now for PMQs as Labour leader Sir Keir Starmer gets ready to launch a series of questions at the prime minister.

We'll bring you all the action from what is likely to be a lively session, and you can also watch the live broadcast from Parliament by clicking the play button at the top of this page.

We'll be keeping an eye on the front bench too - and how the various Tory leadership contenders place themselves.

Iain Watson
Political correspondent

It is one of the more curious - perhaps cruel - conventions of our unwritten constitution that a PM ditched by their party still has to face the opposition at high noon on Wednesdays until a successor is in place.

If tradition is a guide, Boris Johnson will be cheered to the rafters by the very MPs responsible for his downfall.

He got a less good reception last week when we was - at that stage - determined to stay in No 10.

Back now to Penny Mordaunt, whose launched her campaign a short while ago.

Here's a clip from her speech - she said the British people are fed up with politicians not delivering.

Iain Watson
Political correspondent

Kemi Badenoch has turned up for her hustings grilling, and was immediately greeted with the banging of tables - a sign of approval at Westminster.

Meanwhile, Suella Braverman leaves, telling me she hadn't faced any tricky or difficult questions and that she stood on a platform of being an "authentic Brexiteer" and on withdrawal from the European Convention on Human Rights.

Three members of the audience who haven't yet declared for a candidate emerged from the hustings and I asked them who had performed best so far.

One said "Suella was head and shoulders above the others". Another MP said "Suella was very impressive, very precise, there was no ranting", while the third was more diplomatic: '"They were all very good".

Later Kemi Badenoch leaves to the sound of banging desks - probably a sign that her "anti-woke" pitch went down well.

She tells me that all the questions she faced were difficult but the session seemed to go well.

Nadhim Zahawi leaves the hustings without uttering a word but smiles and gives not one but two thumbs up.

Jeremy Hunt leaves looking relaxed after giving his pitch and says he was asked "very good questions". Penny Mordaunt rushes into the hustings straight from her campaign launch.

Image source, EPA

There are less than 15 minutes to go now until Boris Johnson appears at his first Prime Minister's Questions since resigning as Conservative Party leader last Thursday.

In what is expected to be his penultimate PMQs as prime minister before a new Conservative leader takes over, Johnson will face Labour leader Sir Keir Starmer in the House of Commons from 12:00 BST.

Stay with us as we bring you all the latest from Parliament.

Earlier, another candidate, Tom Tugendhat, was speaking outside Parliament. He said the UK needs to continue defending its interests overseas.

He says the Conservative Party needs to make sure it remembers that not only the wider public, but the world is watching what is being said by the candidates during this leadership race.

He says he's "explaining the consequences of the words that we use... as we speak to each other, as we speak to our friends".

He also said his government would have a "10-year plan for growth" which would allow tax cuts, and he says this is about levelling up whole communities.

He promises to say more about where the money to fund his proposed tax cuts will come from "in the coming days".

Responding to a question on leadership, Mordaunt says Margaret Thatcher said "every prime minister needs a Willy, a woman like me doesn't have one". She is referring to Willy Whitelaw, Deputy PM under Thatcher.

Later, Mordaunt is asked by the Telegraph's Christopher Hope to define a woman.

"I'm a woman, I'm biologically a woman," she replies, "if you have been in the Royal Navy, and you have competed physically against men, you understand the biological difference between men and women."

Penny Mordaunt has been taking a number of questions. She is asked if she would need to call a general election if she wins, because she's not well known in the country (she's a junior minister in the current government).

Mordaunt says no. She says she stood on the same manifesto as Boris Johnson. Her job will be to deliver on that manifesto. She adds that she is the candidate Labour fears most.

Asked by the BBC's Chris Mason if she has the necessary experience to be prime minister, she says she has a breadth of valuable experience.

Image source, EPA

Back at Penny Mordaunt's launch now, and she says the British people are fed up with divisive politics.

She says people have to admit that Whitehall is broken and "we need to do some serious machinery of government changes".

"We need to move at the speed that business and science needs it to," she states.

She says she will focus on easing the cost of living crisis, the tax system needs to be more efficient, and parents will be given more flexible budgets to help with the cost of childcare ahead of a child starting full-time education.

She'll also tackle the stagnation in house building as well as the situation where people cannot access NHS dentistry, she says.

"My country and our party has been through a lot in the past few years," she states, "the British public stepped forward" during the pandemic.

"I can, and we will," she finishes.

Iain Watson
Political correspondent

Liz Truss arrived for her session at this morning's hustings and said she was feeling good. Rishi Sunak was up ahead of her.

She was questioned by the 92 group - so-called not because of the year it was founded but because they used to meet at 92 Cheyne Walk, an upmarket address in Chelsea.

They tend to be on the Thatcherite wing of the party and Include longstanding Eurosceptics.

So her commitment to free market economics and her position on the Northern Ireland Protocol may go down well.

Suella Braverman arrived for her slot in bullish mood. She said she was enjoying the contest and honoured to be part of it.

Team Braverman say they have set up lots of face to face meetings with fellow MPs - and stress the confidentiality of the ballot.

In other words, they think some people publicly declaring for other candidates can be persuaded to do something else in the polling booth.

Setting out her stall, Penny Mordaunt begins by recalling growing up in Portsmouth and as a child watching the Task Force set sail for the Falklands in 1982. Mordaunt says the party needs to return to those old values of "duty, service and sacrifice".

She says the Conservatives' greatest failings have been when they've come adrift of those values and "lost a sense of self". She wants a return to low tax, a small state and personal responsibility.

Mordaunt speaks of the country facing "serious challenges" - from the war in Ukraine to staving off recession. She says her prime objective is to restore standards and trust.

Chris Mason
Political editor

PM for PM it says on the lectern.

Yes, another lectern. Another launch. This time it’s the trade minister Penny Mordaunt.

We are in a small side room at the cinnamon club, a posh curry house in Westminster.

It’s absolutely rammed in here. And a bit on the hot side.

Mordaunt’s supporters have a spring in their step.

Working assumptions are dangerous in contests like this — but for what it’s worth right now there feels like there’s a battle on to get the second slot in the final run off of two candidates, alongside the former chancellor Rishi Sunak.

And Team Mordaunt reckon if they can make it - and it’s a big if - they are best placed to beat him.

ITV's political editor Robert Peston is among those who've noticed that Nadhim Zahawi's campaign website appears to be playing catch-up.

Click on NZ4PM.com - and you get a message not from the Chancellor, but from rival candidate Penny Mordaunt..

Image source, PA Media

As our political editor Chris Mason points out votes and loyalties are switching all the time.

And a tweet from culture Secretary Nadine Dorries yesterday shows just how frenetic things are.

Last night she accused Rishi Sunak’s team of pulling "dirty tricks" after he and Jeremy Hunt made it into the first ballot of MPs in the Conservative leadership contest.

Dorries, who is backing Foreign Secretary Liz Truss, tweeted, external: "This is dirty tricks/a stitch up/dark arts. Take your pick.

"Team Rishi want the candidate they know they can definitely beat in the final two and that is Jeremy Hunt."

She was responding to a tweet which claims ex-chief whip Gavin Williamson had been trying to syphon off votes so Hunt would make it to the final run-off with Sunak.

Former cabinet minister Iain Duncan Smith led the Conservatives from 2001 to 2003. This morning, he has come out in support of Foreign Secretary Liz Truss.

In the 2016 Brexit referendum, Duncan Smith campaigned to leave the EU. In 2019, he chaired Boris Johnson's leadership campaign.

Earlier this year Truss said she regretted voting for Remain in 2016 and added that opponents of Brexit's warnings of "doom" had not "come to fruition" .

There's a long way to go, and Penny Mordaunt hasn't even officially launched her campaign yet, but here's how things are playing out at the betting shop just now:

Image source, .

Winning over businesses is a key task for any future prime minister and today two groups have outlined what they want to see from the candidates.

The Corporate Leaders Group - which includes Lloyds Banking Group, Amazon, Unilever, Coca-Cola, Scottish Power and others - has written an open letter, external to Conservative leadership candidates urging them to commit themselves to the environmental policies pursued by Boris Johnson's government.

Image source, PA Media

The letter asks the contenders to "implement your party’s manifesto commitments to reach net zero emissions by 2050 and restore nature within a generation".

Concerns have been raised that the next prime minister might pause or even shelve climate change policies because of the cost of living crisis.

Meanwhile, the CBI haswarned the leadership campaignsthat the wrong tax cuts could fuel further inflation.

CBI director general Tony Danker called for "serious, credible and bold plans for growth", with the group suggesting a permanent extension to extra tax reliefs on investment - due to expire in April - and an overhaul of business rates are more important to create investment and growth.

Trade minister Penny Mordaunt is expected to formally launch her campaign later this morning.

She currently has the second highest number of Tory MPs backing her. She became the UK's first female defence secretary in 2019, and has served as international development secretary and minister for women and equalities.

She's best known outside Westminster for appearing on ITV's celebrity diving show Splash!

She has pledged a 50% cut in VAT on fuel and to raise the basic and middle earner income tax thresholds in line with inflation.

She voted leave in the 2016 Brexit referendum.