Do you still want to bring down the system, Andrew Marr asks.

"I want to transform the system, to one where prosperity is shared by all," the shadow chancellor answers. 

Asked if he could be the first Marxist chancellor after 8 June, John McDonnell replies: "I'm going to be the first socialist in the tradition of the Labour Party."

He says that tradition is rooted in fairness and democratic decision-making.

Are you a Marxist? "No... I believe there's a lot to learn from reading Capital," but he says his views are much broader than that. 

Labour's John McDonnell says there'll be "no stealth taxes either". He's asked about possible rises to employers' national insurance, but insists: "That isn't happening."

There are also "no plans" to raise VAT, apart from the plans to add it to private school fees to fund free school meals for all. 

The shadow chancellor won't be drawn on the possibility of a "wealth tax" for the super rich. "We're not talking about hitting people hard, we're talking about modest increases," he adds.

On to tax, John McDonnell says those earning over £80,000 will be "asked to pay a modest bit more". 

He says the specifics will be set out in the manifesto - coming soon - but he repeats: it will be "a modest bit more".

The shadow chancellor says he wants to reassure low and middle earners that they won't see their taxes rise.

The extra money raised will go to health, care and education, he adds. 

"If they do see more of Jeremy, they'll see the honest and decent person he is, and also his strength," says shadow chancellor John McDonnell. He's eager for people to get that chance in a TV debate. So far Theresa May has refused to take part in one.

Now up, shadow chancellor John McDonnell who is smiling and looking upbeat as the interview begins. First, he's asked about the local elections.

"They were really disappointing... we fought hard, there were some mixed results, but it was disappointing, of course it was," he says.

Partly the problem is the media, and getting our message across, he says, but it's also a sign that the party needs to unite and "learn more about Jeremy Corbyn as our leader".

The Andrew Marr Show

Archbishop of York John Sentamu is talking to Andrew Marr about the role of religion in politics. Most recently, you'll probably remember, Lib Dem leader Tim Farron found his faith the focus of much scrutiny.

The archbishop says it's legitimate to ask anyone who has expressed a view on homosexuality about that view - but if it's a personal private belief, it should be left out of politics.

"He hadn't expressed a view and somebody is trying to fish," he adds.

The Andrew Marr Show

Jim Waterson, political editor of Buzzfeed, talks about how the election is playing out on social media and says the picture there is very different from that in the mainstream media. "It's a world where Jeremy Corbyn is doing much better and all the talk is of 'evil Tory policies'," Waterson says.

Facebook, he adds, is key as it's the place where most people like to hang out online - as opposed to Twitter where politicians and journalists tend to spend a lot of time.

The Andrew Marr Show

Tim Montgomerie, Conservative commentator, (on the right of the picture below) says it's been "a brilliant week" for the Conservatives electorally, but the situation surrounding Brexit negotiations is problematic. Theresa May went to the US just a few days after Donald Trump was elected to express the importance of the special relationship, but there's never been a big pro-European speech, he says. This week, it was "more like a declaration of war", he thinks.

The Andrew Marr Show

We’re off with the newspaper review on Andrew Marr’s sofa. Ayesha Hazarika, Labour adviser-turned-comedian - pictured centre, above - says today's "popular policy lean" is an attempt to get back on the front foot after the poor local election showing. The devil will be in the detail though, she adds - how much will this policy raise and where will it be spent? 

Image source, EPA

A bit more on the Lib Dem triple lock commitment (remember, the policy binds the government to raise the state pension year on year in line with wages, inflation or by 2.5%, whichever is highest). 

The Independent points out, external that while leader Tim Farron, above, says the promise shows his party "would help pensioners when the Conservatives would not", he "is likely to come under fire over the winter fuel allowance from Labour".

Jeremy Corbyn has promised to keep the benefit, worth up to £300 a year, for all over-65s, regardless of their wealth.

Lib Dems argue their change will just mean rich pensioners losing “perks they do not need”, the paper adds.

If you're just waking up (lucky things), here are the key developments in this morning's main news:

• Labour promises not to raise taxes for 95% of earners - those earning over £80,000, will pay more
• Lib Dems commit to keeping the pensions "triple lock", but will take winter fuel allowance away from better off pensioners
• Tories pledge to reform mental health legislation and employ more staff to help sufferers
• Coming up at 0900 BST: shadow chancellor John McDonnell and Health Secretary Jeremy Hunt talk to Andrew Marr

Image source, Getty Images

We've launched a BBC Election Bot to keep you up to date with the latest news on the UK general election campaign.

You can access it here through Facebook Messenger, external.

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Image source, PA

A couple of entries back we mentioned that former Lib Dem health minister Norman Lamb would be coming up later on Sunday Politics. Well, we've actually already had a sniff of what he thinks of the Tories' mental health promises - and he doesn't seem to be impressed.

BBC Breakfast

There's an election just across the Channel taking place right now, of course, with French voters choosing their next president. As they do so, it's emerged that one candidate, Emmanuel Macron, has been the victim of a hacking attack.

Dominic Grieve, who was chair of the Intelligence and Security Committee until parliament was dissolved earlier this week, says that so far, there's no evidence of hacking here, but it is a possibility.

Image source, Getty Images

UKIP had a torrid time at last week's local elections, losing all but one of their council seats. No doubt former leader Nigel Farage will be asked about that when he appears on Robert Peston's show this morning on ITV. He'll also be talking to Jeremy Hunt and Labour's Emily Thornberry, above. 

She'll be talking tax, we suspect, but may also face questions on defence and Labour's attitude towards the UK's nuclear weapons system, Trident. She's shadow foreign secretary right now, but has also held the defence brief in the past.

Completing the Sunday morning line-up, Sunday Politics will be hearing from Richard Burgon, who is seeking re-election for Labour on 8 June, and Lib Dem MP Norman Lamb. He's been a strong voice for better provision for sufferers of mental health problems, both in and out of government, so no doubt, he'll be discussing the Tories' latest pledges on that subject.

Here's a look ahead to what's coming up this Sunday morning. On The Andrew Marr Show, we'll be hearing from shadow chancellor John McDonnell about Labour's tax plans. Jeremy Hunt, the health secretary, will also be in the chair, no doubt discussing the Conservatives' ideas to improve mental health provision.

After Marr, we'll bring you snippets from 5 live's Pienaar's Politics. John will be talking to Labour's Margaret Beckett and Conservative Anna Soubry among other guests.