Sir Keir Starmer's remarks and the Q&A in Liverpool have now concluded.

Scroll down to read what he had to say about investment in carbon capture and storage technology, war in the Middle East, and continuing questions about donations and freebies.

Back to the topic of carbon capture, the prime minister is asked about the supposed problems with the technology, and whether it's right to lock the UK into fossil fuel assets. 

Sir Keir Starmer says the investment in carbon capture is "very important" in relation to the government's climate obligations 

"We've got the skills and the jobs and the potential to get ahead on carbon capture," he adds. 

"That is a good thing in its own right." 

He says it is a chance to prove that the UK has a "government of change" and that it has turned its back on decline. 

Martina Bet from The Sun asks the prime minister if his decision to pay back more than £6,000 worth of gifts and hospitality received since taking office is an admission that he made a misstep and must do better.

She also asks if his cabinet should do the same and repay post-election freebies.

Sir Keir Starmer replies: "No, we're going to draw up some principles so that everyone can see the basis on which donations etc can be accepted, so we're working on that.

"Until they're drawn up, I decided to repay so that any future activities of me or anybody else are in accordance with whatever the new principles are.

"That's my personal decision - I'm not saying others should do the same."

The questions have moved to other topics, with one reporter from the i newspaper asking the prime minister about the ongoing conflict in the Middle East. 

Sir Keir Starmer is asked if there is a risk the UK could be dragged into war with Iran if the situation escalates any further. 

He replies by saying that the "most important" thing in the Middle East is the need for de-escalation. 

"I am concerned that this on the brink and I am concerned that we do everything we can do to de-escalate the situation, and that has been the constant message from this government," he adds. 

He also urges UK nationals to leave Lebanon immediately, saying evacuation plans are in place in the country. 

Next to ask a question is Sky News political correspondent Tamara Cohen.

She puts to the PM that he is announcing £22bn in spending over the next 25 years, having spent weeks telling the nation of the "difficult decisions" to come due to a £22bn black hole in the nation's finances.

She asks if he accepts that the gloomy message of the last few weeks has actually turned off investors.

Sir Keir Starmer replies: "It is absolutely clear that the approach we've taken, which is to stabilise the economy - that is attractive to investors."

He insists that the impediment to investment has been political "chaos" and "instability", without a long-term strategy.

He reiterates that the government will have to take "really difficult decisions" in the upcoming budget, such as the cut to the winter fuel allowance, in order to "stabilise the economy", which is the only way to attract more investment.

The PM also rejects the argument that the government's gloomy message has put off investment in recent weeks, listing a number of recent announcements.

"And I am confident that in the coming weeks and months, I'll be announcing... other investments that are coming in. So the proof is in the pudding here," he says.

Cohen also asks if, given that the donations and freebies row is not subsiding, politics should be funded differently.

But the PM dodges the question, saying: "I'm not sure there's anything I can add to the very many answers I've given in the last week or two."

The prime minister is now taking questions from news reporters, and the first one comes from the BBC. 

Sir Keir Starmer is asked if the funding and projects announced today are new, with the reporter pointing out that the Tories previously announced £20bn for a similar scheme. 

"The Tories spoke about doing this, but they didn't actually do any of the agreements, and they didn't put the money aside," he replies. 

"So that is the big change and this is the big political divide now between invest or decline.

"You don't get investment just by talking about investment." 

The prime minister is speaking in Liverpool about the government's plans to invest in carbon capture and storage.

He opens by jokingly saying that those present may have been expecting to see "Kylie... but you've got Keir instead", although it's not clear exactly what he's referring to at this stage.

Continuing, Sir Keir Starmer makes his now customary mention of the fact his father was a toolmaker and worked in a factory, while thanking the workers at the plant where he is speaking.

The public and private investment being announced today is a "moment of partnership", and he tells workers the agreement is also about ensuring there are "thousands" of skilled jobs available.

The PM goes on to say this is a "landmark week" following the closure of the last coal-fired electricity plant, and "we see the new future on our horizon with carbon capture on storage".

Today's investment will create 4,000 jobs, and will lead to up to 50,000 jobs in the wider supply chain, he says.

"The necessary mission of decarbonisation does not mean deindustrialisation," Sir Keir argues - seeking to reassure those with fears that the green transition will lead to job losses.

"I know what we lost when we lost coal all those years ago. But I also know how we can rewrite our story in the ink of the future," he says.

"I've always believed that clean energy is a golden opportunity for our country, a chance to bring security and hope to working people, relight the fires of renewal in those areas that got hit so hard by deindustrialisation," Sir Keir says.

"This is a race, a global race to get ahead. And I'm really pleased that we're putting ourselves in the position not just to be in that global race, but to win that global race.

"And that will be measured in thousands of jobs for literally decades to come."

In the next few moments, we are expecting the prime minister to speak, but first we're hearing from Chancellor Rachel Reeves. 

She says it's great to be in the North West to announce £21.7bn for two "groundbreaking projects" in Teesside and Merseyside. 

She says that not only is it a good opportunity for the energy sector, but also a "massive opportunity to attract investment and create thousands of skilled jobs, paying good wages".

Ms Reeves describes it as the "basis for a new era of prosperity" and says it shows the government's growth mission will reach "every corner of Great Britain". 

"We're writing a new chapter of innovation and resilience, and we're doing that together," she adds.

Energy Secretary Ed Miliband is up first, and he starts by praising a "historic week for Britain's energy system".

He explains that on Monday, "142 years of coal-fired electricity generation" came to an end, and pays tribute to "the generations of coal workers... who powered our country for more than a century - we owe them a huge debt".

He goes on to declare that, today, "a new era begins" with investment in carbon capture and storage.

Mr Miliband hits out at "dither and delay" under previous governments, and says: "Just three months since the general election, we turn promise into reality."

He says the government has agreed commercial terms with "private sector partners" to build two clusters of carbon capture and storage facilities.

This investment, alongside public funding, is "critical to meeting our climate commitments", he argues.

The prime minister is about to deliver remarks as the government has unveiled plans to spend up to £22bn to fund projects that capture greenhouse gases from polluting plants and store them underground.

Sir Keir Starmer will be introduced by his energy and net zero secretary, Ed Miliband, and the chancellor, Rachel Reeves.

The PM is expected to deliver some remarks, after which he will take questions from the media.

Watch live on Sky News, in the stream above, at the link below - and follow live updates here in the Politics Hub.

Watch Sky News on Sky channel 501, Virgin channel 602, Freeview channel 233, on the Sky News website and app or on YouTube.