The Lib Dems have a manifesto of their own to launch today. Not the full package - that'll be later this week - but their business manifesto.

It includes:

• a £100-a-week allowance for budding entrepreneurs to help with living costs, up to a maximum of £2,600
• a promise to review business rates
• expansion of the state-owned British Business Bank to make it easier for firms to borrow  
• an extra month of paid paternity leave  

Read more.

Some 16-year-olds are so keen to have their voice heard, they are knocking on doors to canvass for votes.

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Labour supporter and commentator Owen Jones says Germany and France have higher levels of corporation tax than Labour is proposing, but also higher levels of productivity, so people have nothing to fear.

On the idea of a transaction tax on business in the City, Jones says Labour's London mayor is "wrong" to warn it would be "madness" and would drive firms overseas.

"Asking just a tiny, tiny fraction of a percentage to be levied on those transactions to fund public services" is entirely reasonable, he goes on, adding: "The time is right for it."

BBC Breakfast

"The more that Jeremy Corbyn gets out there... the more people realise what a decent, honest person he is and the type of leader he is... that will translate itself into people voting on the ballot box," Mr McDonnell insists.

Thousands of people are turning up to see him as he tours the country - "meetings have been swamped" - he goes on.

There's a "rumbling underneath the surface" among people who want change, he adds.

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BBC Breakfast

The shadow chancellor will not be tempted into revealing any new details of his manifesto early.

"We've got to invest for the long-term future, make sure we have a fair taxation system, and can afford the public services we need," he says, sticking to the broad brush.

The highest earners will have to pay "a little bit more", he says - repeating it more than once, in fact.

"We just want to bring fairness back to our society."

BBC Breakfast

Shadow chancellor John McDonnell says the level of detail on policy costing we'll see in the Labour manifesto is "quite innovative and ground-breaking".

"No other political party has ever done this in this sort of detail," he tells Breakfast.

He scoffs at the suggestion that the cost of Labour's plans adds up to £93bn.

"Nowhere near", he says, "there's been lots of wild and exaggerated claims."

Today Programme
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"There are clearly big risks here on the tax side at least," says the IFS's Paul Johnson.

Much relies on an "enormous" increase in corporation tax - one of the biggest tax increases in decades - he says, which Labour say will raise £20bn. Whether it'll actually raise that isn't clear - companies will respond - they may invest less or try a bit harder to avoid tax, he says. 

Caveats aside, the tax burden will easily be the highest it's been for 30 years, he adds, even if it's not very transparent who's actually paying it.

But a lot rides on being able to squeeze much more in tax out of the economy without harming it.

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Today Programme
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Paul Johnson, director of the Institute for Fiscal Studies, says there is at least £75bn of public sector spending in Labour's manifesto, but what's interesting is the relatively small amount being spent in some key areas.

He says the party doesn't seem to be promising to reverse all the benefit cuts coming down the road and the amount promised for the NHS isn't that big compared with many other areas.

"There's actually very little money for what you think would be their priorities - welfare and health," he tells Today.

The race is on for manufacturers (who would probably appreciate a little more warning next time).

BBC Breakfast

"My activists are working hard throughout the country," says Leanne Wood.

She says she is certain there is going to be "a Tory landslide in England", but what matters is how strong a voice Wales has to oppose the government that is elected.

Pushing to protect jobs in Wales that depend on tariff-free access to the EU market and maintaining support for programmes that rely on Brussels funding are two of the priorities she sets out.

BBC Breakfast

Leanne Wood, leader of Plaid Cymru, tells BBC Breakfast her party manifesto is "an action plan to defend and develop Wales" as the Brexit process gets under way.

"The risk is that an increased Tory mandate... would be devastating for our communities here in Wales, our public services and the status of our nation even," she says.

Ms Wood says Labour has dominated in Wales for over a century, but is now split and people are "not happy" to support that kind of party. 

"Theresa May is now the leader of the national party of England, the SNP are a strong voice for Scotland, what about Wales?" she asks.

Norman Smith
Assistant political editor

Today is not really about policy - it’s about money and whether Labour’s sums add up. What matters is not the scope of their plans, but the credibility - can Labour deliver them?

The sums are formidable. £37bn for the NHS, £16bn on education, £8bn on social care, billions more on renationalisation, reversing benefit cuts and public sector pay cuts - conservatively it's at least £50-60bn of public spending, probably well north of that.

Labour has identified some of the money - some from the City, a lot from business, the rest from the wealthy, in particular changes to income tax.

Among the plans is a so-called "fat cat tax" a levy on firms who pay people "excessively high salaries" - 2.5% on salaries about £330,000 or 5% on more than £500,000.

Image source, Getty

Jeremy Corbyn says his manifesto will be a "radical and responsible" plan for government, vowing Labour will change the country and govern "for the many not the few".

He will pledge to reverse seven years of austerity but also "manage within our means".

Among the biggest policy announcements:

• nationalise England's water industry, electricity distribution and transmission networks
• bring the railways and Royal Mail back into public ownership
• raise taxes for those earning more than £80,000 and introduce an "excessive pay" levy for anyone on more than £330,000
• more free childcare, including 30 hours a week for all two-year-olds 
• a "Robin Hood" tax on financial transactions 

Hello and welcome to a big day in the election campaign calendar. Big because we’ll be seeing the first manifesto launches.

Labour's takes top billing, and despite the sneak preview we got thanks to last week’s leak, there’s much anticipation about what it’ll contain.

Plaid Cymru will also launch their programme for government today, promising to get the best from Brexit for Wales.

Stick with us for all the news and analysis.