Ian Blackford, the SNP leader in the House of Commons, was on after Karteng.
Ridge asked what would be the red lines for the SNP in a hung parliament, when negotiating with other parties ..
Blackford said austerity was important. Asked about Trident, he said the SNP has had a strong interest in nuclear weapons (as Nicola Sturgeon said in 2015). Climate change was also an important issue, said Blackford.
Ridge shows Karteng Sky polling only 30% of voters think the Tories will spend more on public services. Their message that they are ending austerity is not getting through, she suggests.
He responds by saying that Brexit is the central issue "and then we can have a debate about spending".
Ridge inquiries in Northern Ireland Brexit. Boris Johnson said, Stephen Barclay said that it would be necessary for the United Kingdom.
Karteng says the barclay is wrong.
Next Ridge asks about the abandoned pledge for an inquiry into Islamophobia in the Conservative party.
Karteng says the government has a good record of tackling discrimination. He refers to Sajid Javid being in the cabinet.
Asked about Lady Warsi's criticism of Matt Hancock for "whitesplaining", Karteng gives a general answer about all discrimination being unacceptable.
Ridge asks Karteng about Boris Johnson's comparison of Jeremy Corbyn to Stalin, who is estimated to have killed 1 million people.
Karteng defends the comparison as appropriate. He says "the philosophy, the underlying thinking" is similar to the fact that Corbyn will line people up against a wall and kill anybody.
Ridge asks how the Conservatives have gone through their work.
Karteng says opposition parties can "promise the earth" without any analysis.
Asked again about the figure for the Conservatives, he says:
I'm going to bandy around figures.
Ridge tells Karteng that's exactly what the Tories are doing with respect to Labor.
Kwasi Karteng is asked by Sophie Ridge if the £ 1.2tn figure (see previous update) is "project fear" and "ridiculous", given Labor has not published its manifesto.
The business minister says "they've spoken about the four-day week" as part of his justification. He says Labor's policies "do not add up". Ridge points out that not everything is passed to a conference becomes a policy. "We've shown that they are reckless in their spending," says Kwarteng.
Ridge asks what the Tories's spending commitments will cost. Kwarteng says £ 150bn on infrastructure but will not give an answer to the overall figure.
All he will say is nowhere near Labor's figure.
Good morning, welcome to Politics Live. It's a Sunday and it's just a few days ago, the general election of the leading figures will be desperately trying to make their case on the political talk shows this morning.
I'll be bringing you the latest developments. If you want to get in touch / bring something to my attention your best bet is to tweet me @Haroon_Siddique.
The Observer leads with the story that the Independent Office for Police Conduct (IOPC) has delayed its announcement on whether or not Boris Johnson should face an investigation into possible criminal misconduct over allegations about a conflict of interest in London with the US businesswoman Jennifer Arcuri until after the election.
The decision prompted fury from Westminster politicians and London assembly members who said that it had been "suppressed" in order to protect Johnson from potentially damaging headlines at a crucial stage of the election campaign.
The IOPC has denied the allegation that it has been decided.
Kwasi Karteng is one of the world's top business leaders. He will no doubt want to put the emphasis on the Tories' claim that it will cost you more than one year. The Sunday Telegraph, Sunday Times and Mail on Sunday. The shadow chancellor, John McDonnell, rubbished the file, which assumes all the policies passed at the Labor conference are firm commitments.