BBC home affairs correspondent Danny Shaw offers some interesting figures on spitting. It comes after shadow home secretary Diane Abbott angered her audience at the Police Federation conference when she said she was sceptical about the benefits of spitguards.

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Labour’s election manifesto was first seen last week when a draft was leaked. Click here to see what has changed.

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Share your single, biggest election issue and shape an interactive live debate for young adults here.

All the chatter today has been about Labour's manifesto promises. 

You can read about them here, with analysis from BBC correspondents on some of the key areas. 

And there's reaction from rival political parties on the policy pledges made by Jeremy Corbyn in Bradford today. 

Radio 4 PM

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Senior shadow cabinet minister Emily Thornberry says: "We've set aside £10bn to offset the impact of the proposed benefits freeze.

"I don't think we're going to reverse it entirely, we're not going to promise things we can't afford."

She adds that "we will look at the worst affected", including changing the way disability benefits are assessed and "do something about the benefit cap".

"We need to go in and look at what the mess is" before outlining a complete benefits policy, she says. 

Asked about some confusion caused by a comment Mr Corbyn made earlier about not keeping the freeze, she says "he'd just made a speech, there were lots of questions".

Reality Check

Here's a handy chart showing what Labour's income tax plans would do to tax rates.

The chart is already a bit bumpy. When people earn above £100,000 the taxman starts clawing back their income tax-free allowance at a rate that means it's all gone if they earn more than £123,000.

In that band, people are paying a higher rate of tax on each extra pound earned than people earning over £123,000. 

£123,000 is also the rate at which Labour wants to introduce the 50p rate of tax on each pound earned.

This chart does not include other bumps in the system such as the loss of child benefit for parents earning between £50,000 and £60,000 a year, which raises the marginal tax rate in that band considerably.

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The SNP mark the 10th anniversary of coming to power, but opponents say it has been a decade of missed opportunity.

The nation's best paid can expect to pay more tax under a Labour government.

BBC News Channel

Professor Jonathan Portes, a former economics analyst for Gordon Brown, says the renationalisation of water would depend on the market price but could cost tens of billions. 

He argues: "The question of whether we should borrow money to buy an asset should not be decided by how it affects the deficit but whether it would it be run better in the interest of taxpayers and consumers."

He points to "perfectly good" public industries in Europe but acknowledges the UK has had "issues in the past" with nationalised services. 

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The foreign office minister who tried to save stabbed PC Keith Palmer outside Parliament fought back tears earlier as he spoke to the Police Federation. 

Tobias Ellwood was presented with a coat of arms and a shield for his role in trying to save PC Palmer, who was fatally stabbed on 22 March by Khalid Masood. 

The Conservative candidate for Bournemouth East said he "reacted in the way that I thought was appropriate. I was one of many that stepped forward to do what we thought was right".

He paid tribute to the police: 

He talked about his ministerial work in the Middle East and Africa and said dealing with extremism was "probably the most serious threat in the 21st Century". 

Philip Sim
BBC Scotland political reporter

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The general election in Scotland will feature fewer candidates than in recent history. 

For June's general election, 266 candidates have put themselves forward for Scotland's 59 constituencies. Each of the four major parties - the SNP, Conservatives, Labour and Lib Dems - have put forward a candidate in every seat.

That leaves just 30 independent candidates and people representing "other" parties, such as the Greens, UKIP and others.

Why might that be?

Anthony Reeves, Timperley, AltrinchamThe sound bites are all very good and headline grabbing, but what makes Mr Corbyn think that in a fiscally aware world the British economy can grow and flourish with a larger, older working population by going back to the late 60s and 70s where nationalised industries held successive governments to ransom?

Clive Houghton, Broadstairs, KentNo mention then of the elephant in the room, care for the elderly?

Stuart Smith, Great Bookham, SurreyThe problem that I have with Labour is can they be trusted? They say that tax will only increase for the richest but in the past they have taxed the working man far more than the Tories. We are suffering now because of their overspending in the Blair/ Brown years.  How can you trust a party when their own shadow home secretary cannot add up?  In respect of nationalising water and the railways where is this £60bn going to be raised, if not by taxation?

Alan Bathurst, Leominster, Herefordshire

At this time of the year I like to listen for the call of the cuckoo but this year reading the Labour manifesto will do. It is full of good intent and admirable but just not achievable and clearly completely cuckoo.

Following his chat with grime artist JME, Jeremy Corbyn has tweeted a message from Withnail and I actor Paul McGann on registering to vote. 

More on Labour's plans for schools.

The party pledges to limit class sizes to 30 pupils for all five-, six- and seven-year-olds and to bring in free school meals for all primary pupils, using money raised by removing VAT exemption on fee-paying schools.

Labour says it would abandon plans to reintroduce baseline assessments and review national curriculum tests (known as Sats) for Key Stage 1 and 2 pupils, to discourage "teaching by test".

The manifesto states that the party would not "waste money on inefficient free schools", while dismissing grammar schools as a "Conservative vanity project".

It also promises to extend school counselling, at a cost of £90m.

Read more here.

The media questions at Labour's manifesto launch were a valuable source of innocent merriment, designed as ever to challenge and contend.