Mr Corbyn told the Press Association news agency it was a "great honour" to get Unite's backing, saying it "underlines that this a serious campaign that has growing momentum".
Quote Message: The leadership election is about one issue above others: whether we accept another five years of a race to the bottom based on cuts that destroy services and damage living standards, or whether we invest our way to a growth and fairness"
The leadership election is about one issue above others: whether we accept another five years of a race to the bottom based on cuts that destroy services and damage living standards, or whether we invest our way to a growth and fairness"
He said trade unions were a "force for good, a force for prosperity and we should listen to them more".
Quote Message: For Labour to win again it must show it is on the side of the majority"
For Labour to win again it must show it is on the side of the majority"
BreakingUnite backs Corbyn
The executive committee of Labour's biggest financial backer, the Unite trade union, has voted to support Jeremy Corbyn as Labour leader, with Andy Burnham as second preference.
Benefits cap
Michael Buchanan, BBC News social affairs correspondent, reported on Thursday that the chancellor was understood to be pushing for the cap on all benefits to be lowered from £26,000 to £20,000 outside the capital.
The BBC News understands the benefit cap outside London will be reduced to £20,000 per household.
It comes after Chancellor George Osborne confirmed on the Andrew Marr programme that, while the cap is being cut to £23,000 in London, it would be "lower in the rest of the country".
BBC website's future
BBCCopyright: BBC
George Osborne hinted that the BBC's website was an area to be looked at during Charter renewal in his Andrew Marr interview.
"If you've got a website that's got features and cooking recipes - effectively the BBC website becomes the national newspaper as well as the national broadcaster," he told Andrew Marr.
"There are those sorts of issues we need to look at very carefully.
"You wouldn't want the BBC to completely crowd out national newspapers. If you look at the BBC website it is a good product but it is becoming a bit more imperial in its ambitions."
Osborne confident of BBC 'deal'
BBCCopyright: BBC
"I would say the BBC is a well-run organisation under Tony Hall, I'm absolutely sure they can make a contribution. But I want the BBC to have a strong future," George Osborne told Andrew Marr.
Quote Message: There are massive technological changes that if we don't address will mean the licence fee income will slowly disappear. I think therefore that's the basis of a deal we can do
There are massive technological changes that if we don't address will mean the licence fee income will slowly disappear. I think therefore that's the basis of a deal we can do
The BBC's future
Chancellor George Osborne earlier told the Andrew Marr show he wanted the BBC to have "a strong future", but the broadcaster should be making a "contribution" towards tackling the deficit.
Quote Message: The BBC is also a publicly-funded institution and so it does need to make savings and contribute to what we need to do as a country to get our house in order. So we are in discussion with the BBC. We've got the Charter process going on as well"
The BBC is also a publicly-funded institution and so it does need to make savings and contribute to what we need to do as a country to get our house in order. So we are in discussion with the BBC. We've got the Charter process going on as well"
Mr Osborne dismissed that the BBC taking on the cost of free licences for the elderly would mean axing one of the BBC's major channels.
Quote Message: I remember five years ago doing a deal with the BBC... where actually the BBC took on £500m worth of responsibilities including things like the BBC World Service. I was told at the time by people 'They're going to shut down BBC2, they're going to close Radio 4'. They always seem to pick the juiciest fruits on the tree
I remember five years ago doing a deal with the BBC... where actually the BBC took on £500m worth of responsibilities including things like the BBC World Service. I was told at the time by people 'They're going to shut down BBC2, they're going to close Radio 4'. They always seem to pick the juiciest fruits on the tree
But it is understood the government is in discussion with the BBC over changes that would help it recoup some of the cost by allowing it to start charging people for using the iPlayer and other online catch-up services, which viewers currently don't need a TV licence to watch.
Former Conservative chancellor Lord Lamont has told Sky News's Murnaghan show that whatever the outcome of the referendum, the situation is going to be "extremely messy".
Quote Message: The odd thing is, in this referendum, whether you vote yes or no, both sides are saying stay in the Euro. It's a question of on what terms. So it's very difficult to know what difference this is actually going to make"
The odd thing is, in this referendum, whether you vote yes or no, both sides are saying stay in the Euro. It's a question of on what terms. So it's very difficult to know what difference this is actually going to make"
BBC 'to pay for over-75 licences'
Chancellor George Osborne is planning to announce in Wednesday's budget that the BBC will have to meet the cost of free TV licences for pensioners, BBC News understands.
The Conservatives had promised in their election manifesto to continue to allow over 75s to receive free TV licences along with other pensioner benefits.
Labour leadership
The four Labour candidates have been talking about where their party went wrong at the election - and where it goes from here - at a hustings in Cardiff. In summary, they said:
Yvette Cooper: The party was too narrow at the election...we have to reach out
Andy Burnham: We've been in an identity crisis
Liz Kendall: We lost the election because people didn't trust us with taxes
Jeremy Corbyn: We should be proud of our values as a socialist party
Shadow chancellor Chris Leslie earlier called on George Osborne to bring in tax breaks for employers that pay the living wage.
The chancellor looks set to cut tax credits in Wednesday's Budget - but Mr Leslie warned about underestimating the importance of these benefits to working families.
He told Andrew Marr: "If we can finally persuade George Osborne to U-turn and back some incentives for a living wage, that I think would be very welcome.
"But don't underestimate how important some of these tax credits have been, not just helping people be able to afford to be able to go to work - all those travel costs, childcare costs and so forth - but also there's an important principle about helping the very most vulnerable society."
Quote Message: It's been five years now since the Eurozone tried to sort out the Greek problem. It's manifestly failed to do so. To my mind, unless they take the decision they've got to take to write off substantial amounts of Greek debt, and then to put in place a programme that has got to be delivered in turn by the Greek government, this is going to continue"
It's been five years now since the Eurozone tried to sort out the Greek problem. It's manifestly failed to do so. To my mind, unless they take the decision they've got to take to write off substantial amounts of Greek debt, and then to put in place a programme that has got to be delivered in turn by the Greek government, this is going to continue"
Greek 'chaos'
The Daily Politics
"You could have such chaos, even in the event of a no vote, it could sweep aside the Syriza government and prime minister Alexis Tsipras," says Janan Ganesh, of the Financial Times.
A no vote would be the eurozone's "Lehman Brothers moment" - a major economic shock, says the Guardian's Nick Watt.
It would then fall to Angela Merkel to decide what to do, he tells the Sunday Politics.
Greek result timings
ReutersCopyright: Reuters
Greek PM Alexis Tsipras votes at an Athens polling stationImage caption: Greek PM Alexis Tsipras votes at an Athens polling station
The first indication of a result in the Greek bailout referendum are likely to come at about 19:00 UK time, BBC correspondent Joe Lynam tells the Sunday Politics.
It is not clear what the result, one way or the other, would mean for the future of Greece and whether it could remain in the eurozone, adds our correspondent.
Castro rare appearance
AFPCopyright: AFP
One of the world's most camera shy politicians has made a public appearance for the first time in more than a month.
State television showed images of the 88-year-old former leader of Cuba, Fidel Castro, at a meeting with cheese experts near the capital, Havana.
His appearance comes days after Cuba and the US announced they were reopening embassies in each other's capitals on 20 July.
On to the government's planned boundary changes, which would see the number of MPs cut from 650 to 600.
Labour's Lord Falconer says the cut is being done for "no reason" and a registration drive needs to be carried out first to ensure voters were not lost from the register.
Labour is expected to be the biggest loser from the planned changes.
Conservative MP for Amber Valley, Nigel Mills, tells the Sunday Politics it would "cut the cost of politics" and it was the right thing to do, as most voters would think constituencies should be roughly the same size.
Lord Falconer says it would make more sense to get rid of the House of Lords or at least cut the number of peers, which was now more than 800.
Mr Mills accepts that his own seat might be a casualty of the boundary changes.
SNP urges English votes rethink
The SNP has called on the prime minister to rethink his party's plans to give English MPs a veto on English-only legislation.
In a letter to David Cameron, SNP MP Pete Wishart called the proposals "a constitutional outrage" that would see Scots MPs "cut out" of vital issues.
The SNP has a "long-term suspicion of bombing campaigns", says the party's former leader and foreign affairs spokesman Alex Salmond, when asked about military action against the Islamic State group in Syria.
He calls for a greater diplomatic effort, a better propaganda campaign and better targeting of IS financial assets. He also urges the media to refer to IS as Daesh.
Air strikes would only work with support from ground forces - something that he would not support, he tells Andrew Neil on The Sunday Politics.
Channel 4 sell-off?
Should George Osborne sell off Channel 4? The broadcaster's former chairman, Luke Johnson, tells Andrew Neil the idea is "worth examining".
Labour leadership
BBCCopyright: BBC
Labour leadership contenders Andy Burnham, Yvette Cooper, Jeremy Corbyn and Liz Kendall are about to be quizzed at Cardiff's City Hall.
Beth Rigby, of the Financial Times, wonders if Mr Osborne will try to reassure people worried about benefit cuts for the working poor, on the BBC's Sunday Politics show.
He has ruled out implementing the living wage, but will he do something to try and lift wages? What could he do?
This looks set to be a crucial debate ahead of Wednesday's Budget.
Ashdown's hat
John Pienaar
Pienaar’s Politics
Lord Ashdown seems rather pleased that his famous vow to "eat his hat" if the election night exit polls were right has entered popular folklore.
Lorry drivers shout "Oi Paddy have you eaten your hat yet," he tells Pienaar's Politics.
He also suggests the Lib Dems will be seeking to form an anti-Tory alliance with the Greens and other "progressive" parties, possibly even Labour, in time.
Osborne: Key points
- Confirms benefits cap will be cut to £23,000 in London but will be "lower than that in the rest of the country"
- The BBC must "make savings and contribute" to dealing with UK finances. Comes amid speculation BBC will be ordered to cover £650m cost of over-75s licence fees
David Cameron's claim to be a "One Nation" leader "is just a soundbite" and he is actually leading an "inhuman" government. Lib Dem grandee Lord Ashdown tells Pienaar's Politics.
Many people in the South of England will "rue the day" when "they elected a government that didn't have Liberal Democrats to soften their worst instincts".
Corbyn campaign 'going well'
John Pienaar
Pienaar’s Politics
PACopyright: PA
Left-wing Labour leadership contender Jeremy Corbyn says things could be very, very different" in the UK if he was prime minister, a country with full employment and without poverty.
He also hits out at Tory supporters who are reportedly signing up to Labour in order to sabotage the leadership contest, saying it is not an "honest" thing to do.
He tells Pienaar's Politics his leadership campaign is "going very well".
Mr Corbyn's supporters are rallying behind him on Twitter, using #believeinthebeard
Jones on EU
Digby Jones on EU membership
John Pienaar
Pienaar’s Politics
Former CBI boss and Labour business minister Digby Jones, normally a Eurosceptic voice, says if we got "quality reform" he would back staying in the EU.
He also criticises the president of the CBI, Mike Rake, for effectively backing Britain's membership no matter what, on BBC Radio 5's Pienaar's Politics.
Coming up
Low pay
The Andrew Marr Show
George Osborne has effectively ruled out increasing the minimum wage to £9.15 an hour in London and £7.85 elsewhere - the so-called "living wage".
The danger in cutting in-work benefits and urging firms to pay their low paid staff more is the "time lag", says George Parker, of the Financial Times, on BBC Radio 5 Live's Pienaar's Politics.
Firms will not immediately put up wages to make up the shortfall, he argues.
BBC funding
Just to fill you in on what the chancellor might have in mind for the BBC in Wednesday's Budget,
the Sunday Times says
Mr Osborne wants the corporation to take on the cost of free television licences for the over-75s, which amount to 4.5 million licences at a total cost of more than £650m.
In return, the BBC would be able to charge for the use of its iPlayer service in order to recoup some of the revenue lost by a decline in live TV viewers, the newspaper said.
Greek referendum meeting
The Andrew Marr Show
George Osborne said he would be meeting the prime minister, governor of the Bank of England and others to "assess the situation", whatever the outcome of the referendum.
Quote Message: But I don't think anyone should be in any doubt - the Greek situation has an impact on the European economy, which has an impact on us. We've got to keep our house in order, run that budget surplus, pay down our debts - be better prepared for whatever the world throws at us
But I don't think anyone should be in any doubt - the Greek situation has an impact on the European economy, which has an impact on us. We've got to keep our house in order, run that budget surplus, pay down our debts - be better prepared for whatever the world throws at us
George Osborne thinks he can do a deal with the BBC on its future funding, but refuses to be drawn on whether the corporation will be asked to cover the cost of over-75s licence fees.
He also suggests the BBC website was in danger of "crowding out national newspapers" and becoming "a national newspaper as well as a national broadcaster".
The BBC website is becoming "more imperial in its ambitions," he tells Andrew Marr.
Greek referendum
ReutersCopyright: Reuters
Away from domestic politics, the big story of the day is the Greek bailout referendum.
Millions of people are now voting on whether to accept the terms of an international bailout.
The first results are expected this evening.
George Osborne tells Marr: "Whatever Greece decides, Britain is prepared."
George Osborne refuses to be drawn on speculation he will cut the top rate of income tax, simply stressing that he will deliver what was promised in the Conservative manifesto.
That meant delivering a "fair" welfare system, taking family homes out inheritance tax and helping low and middle income families.
Andrew Marr also draws a blank when he pushes the Chancellor on whether he will scrap "non dom" tax status.
Disability benefits
The Andrew Marr Show
George Osborne is not looking at taxing disability benefits, he tells Andrew Marr, but refuses to be drawn further on what his plans are in this area.
Housing benefit
The Andrew Marr Show
George Osborne indicates there will be further cuts to housing benefit on Wednesday.
"If I don't make these cuts in welfare," he says, he would have to cut public services.
Benefit cap cut
The Andrew Marr Show
George Osborne says the benefit cap will be cut to £23,000 in London but it will be "lower than that in the rest of the country".
He declines to say how much lower. It will no doubt be revealed in the Budget.
Osborne on taxes
Osborne on tax credits
The Andrew Marr Show
BBCCopyright: BBC
Chancellor George Osborne says the best way to help low and middle income people is to make "sure they keep more of their own money" through tax reforms.
The tax credit system is hugely expensive, he says, and it needs to be scaled back.
Osborne up
Boost share ownership
The chancellor is never short of advice in the run-up to a Budget.
The Institute of Directors is calling on him to radically simplify the tax system and give more people a stake in the private sector, with "sensible taxes on wealth, and easy-to-understand investment tax breaks" to encourage share ownership.
Labour now backs the government's benefits cap. They are expected to focus their attacks on Wednesday on productivity and infrastructure spending instead.
This is certainly the tone Chris Leslie is striking in his Marr interview.
"You don't deal with your deficit without strengthening your economy," he says.
Leslie on tax credits
Chris Leslie up first
The Andrew Marr Show
BBCCopyright: BBC
The new shadow chancellor, Chris Leslie, is first in the Marr firing line.
He says he wants to see more from the chancellor on productivity on Wednesday - a perennial problem in the British economy.
He also calls for low pay and rising housing costs and calls for a "U-turn" on the living wage.
And he urges Mr Osborne not to "pull the plug" on tax credits for working people, which could hit some of the most "vulnerable" people in society.
There is speculation Mr Osborne will cut tax credits in his Budget to help meet the £12bn in welfare savings it needs to make.
Osborne coming up
The Andrew Marr Show
Getty ImagesCopyright: Getty Images
George Osborne is the main guest on the Andrew Marr show - he's sure to be quizzed about plans to charge local authority and housing association tenants in England who earn more than £30,000 - or £40,000 in London - the market rent for their homes.
Hello and welcome to our rolling coverage of the big political stories in a day that is sure to be dominated by speculation about Chancellor George Osborne's Budget on Wednesday and today's Greek referendum.
Live Reporting
Brian Wheeler
All times stated are UK
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Latest PostSunday Recap
Today's key politics stories have been dominated by what's in store in Wednesday's Budget:
- The chancellor will announce that higher earners living in social housing will have to pay up to market rent
- The benefits cap will be cut to £23,000 in London, he'll announce, and it's understood the cap outside London will be reduced to £20,000
- The BBC will have to meet the £650m cost of free TV licences for over-75s , BBC News understands
Elsewhere:
- The Unite union says it has voted to support Jeremy Corbyn for Labour leader , with Andy Burnham as second preference
- Millions of Greeks are voting in the bailout referendum , with the first results expected tonight
Corbyn Unite reaction
Mr Corbyn told the Press Association news agency it was a "great honour" to get Unite's backing, saying it "underlines that this a serious campaign that has growing momentum".
He said trade unions were a "force for good, a force for prosperity and we should listen to them more".
BreakingUnite backs Corbyn
The executive committee of Labour's biggest financial backer, the Unite trade union, has voted to support Jeremy Corbyn as Labour leader, with Andy Burnham as second preference.
Benefits cap
Michael Buchanan, BBC News social affairs correspondent, reported on Thursday that the chancellor was understood to be pushing for the cap on all benefits to be lowered from £26,000 to £20,000 outside the capital.
Read more here
Benefits cap
The BBC News understands the benefit cap outside London will be reduced to £20,000 per household.
It comes after Chancellor George Osborne confirmed on the Andrew Marr programme that, while the cap is being cut to £23,000 in London, it would be "lower in the rest of the country".
BBC website's future
George Osborne hinted that the BBC's website was an area to be looked at during Charter renewal in his Andrew Marr interview.
"If you've got a website that's got features and cooking recipes - effectively the BBC website becomes the national newspaper as well as the national broadcaster," he told Andrew Marr.
"There are those sorts of issues we need to look at very carefully.
"You wouldn't want the BBC to completely crowd out national newspapers. If you look at the BBC website it is a good product but it is becoming a bit more imperial in its ambitions."
Osborne confident of BBC 'deal'
"I would say the BBC is a well-run organisation under Tony Hall, I'm absolutely sure they can make a contribution. But I want the BBC to have a strong future," George Osborne told Andrew Marr.
The BBC's future
Chancellor George Osborne earlier told the Andrew Marr show he wanted the BBC to have "a strong future", but the broadcaster should be making a "contribution" towards tackling the deficit.
Mr Osborne dismissed that the BBC taking on the cost of free licences for the elderly would mean axing one of the BBC's major channels.
Unite 'to back Corbyn'
BBC licence fee
The move is expected to cost the BBC £650m.
But it is understood the government is in discussion with the BBC over changes that would help it recoup some of the cost by allowing it to start charging people for using the iPlayer and other online catch-up services, which viewers currently don't need a TV licence to watch.
The BBC declined to comment on the story, which first appeared in this morning's Sunday Times.
Lamont on Greece
Sky News
Former Conservative chancellor Lord Lamont has told Sky News's Murnaghan show that whatever the outcome of the referendum, the situation is going to be "extremely messy".
BBC 'to pay for over-75 licences'
Chancellor George Osborne is planning to announce in Wednesday's budget that the BBC will have to meet the cost of free TV licences for pensioners, BBC News understands.
The Conservatives had promised in their election manifesto to continue to allow over 75s to receive free TV licences along with other pensioner benefits.
Labour leadership
The four Labour candidates have been talking about where their party went wrong at the election - and where it goes from here - at a hustings in Cardiff. In summary, they said:
Yvette Cooper: The party was too narrow at the election...we have to reach out
Andy Burnham: We've been in an identity crisis
Liz Kendall: We lost the election because people didn't trust us with taxes
Jeremy Corbyn: We should be proud of our values as a socialist party
Follow live here
More Chris Leslie
The Andrew Marr Show
Shadow chancellor Chris Leslie earlier called on George Osborne to bring in tax breaks for employers that pay the living wage.
The chancellor looks set to cut tax credits in Wednesday's Budget - but Mr Leslie warned about underestimating the importance of these benefits to working families.
He told Andrew Marr: "If we can finally persuade George Osborne to U-turn and back some incentives for a living wage, that I think would be very welcome.
"But don't underestimate how important some of these tax credits have been, not just helping people be able to afford to be able to go to work - all those travel costs, childcare costs and so forth - but also there's an important principle about helping the very most vulnerable society."
Darling on Greece
Sky News
Former Labour Chancellor Alistair Darling has told Sky News's Murnaghan show the longer the Greek crisis goes on, the greater the risk to the wider European economy.
Greek 'chaos'
The Daily Politics
"You could have such chaos, even in the event of a no vote, it could sweep aside the Syriza government and prime minister Alexis Tsipras," says Janan Ganesh, of the Financial Times.
A no vote would be the eurozone's "Lehman Brothers moment" - a major economic shock, says the Guardian's Nick Watt.
It would then fall to Angela Merkel to decide what to do, he tells the Sunday Politics.
Greek result timings
The first indication of a result in the Greek bailout referendum are likely to come at about 19:00 UK time, BBC correspondent Joe Lynam tells the Sunday Politics.
It is not clear what the result, one way or the other, would mean for the future of Greece and whether it could remain in the eurozone, adds our correspondent.
Castro rare appearance
One of the world's most camera shy politicians has made a public appearance for the first time in more than a month.
State television showed images of the 88-year-old former leader of Cuba, Fidel Castro, at a meeting with cheese experts near the capital, Havana.
His appearance comes days after Cuba and the US announced they were reopening embassies in each other's capitals on 20 July.
More here
Cutting MP numbers
The Daily Politics
On to the government's planned boundary changes, which would see the number of MPs cut from 650 to 600.
Labour's Lord Falconer says the cut is being done for "no reason" and a registration drive needs to be carried out first to ensure voters were not lost from the register.
Labour is expected to be the biggest loser from the planned changes.
Conservative MP for Amber Valley, Nigel Mills, tells the Sunday Politics it would "cut the cost of politics" and it was the right thing to do, as most voters would think constituencies should be roughly the same size.
Lord Falconer says it would make more sense to get rid of the House of Lords or at least cut the number of peers, which was now more than 800.
Mr Mills accepts that his own seat might be a casualty of the boundary changes.
SNP urges English votes rethink
The SNP has called on the prime minister to rethink his party's plans to give English MPs a veto on English-only legislation.
In a letter to David Cameron, SNP MP Pete Wishart called the proposals "a constitutional outrage" that would see Scots MPs "cut out" of vital issues.
They were announced in the House of Commons on Thursday .
However, Scottish Secretary David Mundell said the move was a "sensible and pragmatic" step forward.
Full story here
Salmond rejects air strikes
The Daily Politics
The SNP has a "long-term suspicion of bombing campaigns", says the party's former leader and foreign affairs spokesman Alex Salmond, when asked about military action against the Islamic State group in Syria.
He calls for a greater diplomatic effort, a better propaganda campaign and better targeting of IS financial assets. He also urges the media to refer to IS as Daesh.
Air strikes would only work with support from ground forces - something that he would not support, he tells Andrew Neil on The Sunday Politics.
Channel 4 sell-off?
Should George Osborne sell off Channel 4? The broadcaster's former chairman, Luke Johnson, tells Andrew Neil the idea is "worth examining".
Labour leadership
Labour leadership contenders Andy Burnham, Yvette Cooper, Jeremy Corbyn and Liz Kendall are about to be quizzed at Cardiff's City Hall.
Follow the hustings live here
Lifting low wages
The Daily Politics
Beth Rigby, of the Financial Times, wonders if Mr Osborne will try to reassure people worried about benefit cuts for the working poor, on the BBC's Sunday Politics show.
He has ruled out implementing the living wage, but will he do something to try and lift wages? What could he do?
This looks set to be a crucial debate ahead of Wednesday's Budget.
Ashdown's hat
John Pienaar
Pienaar’s Politics
Lord Ashdown seems rather pleased that his famous vow to "eat his hat" if the election night exit polls were right has entered popular folklore.
Lorry drivers shout "Oi Paddy have you eaten your hat yet," he tells Pienaar's Politics.
He also suggests the Lib Dems will be seeking to form an anti-Tory alliance with the Greens and other "progressive" parties, possibly even Labour, in time.
Osborne: Key points
- Confirms benefits cap will be cut to £23,000 in London but will be "lower than that in the rest of the country"
- The BBC must "make savings and contribute" to dealing with UK finances. Comes amid speculation BBC will be ordered to cover £650m cost of over-75s licence fees
- Higher earners living in social housing in England will have to pay " have to pay something closer to the market rent " if they want to stay in their homes
Watch Osborne on benefits cap here
Ashdown takes a swipe at Cameron
John Pienaar
Pienaar’s Politics
David Cameron's claim to be a "One Nation" leader "is just a soundbite" and he is actually leading an "inhuman" government. Lib Dem grandee Lord Ashdown tells Pienaar's Politics.
Many people in the South of England will "rue the day" when "they elected a government that didn't have Liberal Democrats to soften their worst instincts".
Corbyn campaign 'going well'
John Pienaar
Pienaar’s Politics
Left-wing Labour leadership contender Jeremy Corbyn says things could be very, very different" in the UK if he was prime minister, a country with full employment and without poverty.
He also hits out at Tory supporters who are reportedly signing up to Labour in order to sabotage the leadership contest, saying it is not an "honest" thing to do.
He tells Pienaar's Politics his leadership campaign is "going very well".
Mr Corbyn's supporters are rallying behind him on Twitter, using #believeinthebeard
Jones on EU
Digby Jones on EU membership
John Pienaar
Pienaar’s Politics
Former CBI boss and Labour business minister Digby Jones, normally a Eurosceptic voice, says if we got "quality reform" he would back staying in the EU.
He also criticises the president of the CBI, Mike Rake, for effectively backing Britain's membership no matter what, on BBC Radio 5's Pienaar's Politics.
Coming up
Low pay
The Andrew Marr Show
George Osborne has effectively ruled out increasing the minimum wage to £9.15 an hour in London and £7.85 elsewhere - the so-called "living wage".
Entrepreneur and former senior Tory adviser, Rohan Silva, has called for this in an article for The Guardian.
The danger in cutting in-work benefits and urging firms to pay their low paid staff more is the "time lag", says George Parker, of the Financial Times, on BBC Radio 5 Live's Pienaar's Politics.
Firms will not immediately put up wages to make up the shortfall, he argues.
BBC funding
Just to fill you in on what the chancellor might have in mind for the BBC in Wednesday's Budget, the Sunday Times says Mr Osborne wants the corporation to take on the cost of free television licences for the over-75s, which amount to 4.5 million licences at a total cost of more than £650m.
In return, the BBC would be able to charge for the use of its iPlayer service in order to recoup some of the revenue lost by a decline in live TV viewers, the newspaper said.
Greek referendum meeting
The Andrew Marr Show
George Osborne said he would be meeting the prime minister, governor of the Bank of England and others to "assess the situation", whatever the outcome of the referendum.
Osborne on the election
Osborne on the BBC
The Andrew Marr Show
George Osborne thinks he can do a deal with the BBC on its future funding, but refuses to be drawn on whether the corporation will be asked to cover the cost of over-75s licence fees.
He also suggests the BBC website was in danger of "crowding out national newspapers" and becoming "a national newspaper as well as a national broadcaster".
The BBC website is becoming "more imperial in its ambitions," he tells Andrew Marr.
Greek referendum
Away from domestic politics, the big story of the day is the Greek bailout referendum.
Millions of people are now voting on whether to accept the terms of an international bailout.
The first results are expected this evening.
George Osborne tells Marr: "Whatever Greece decides, Britain is prepared."
Read more here
Top rate tax cut?
The Andrew Marr Show
George Osborne refuses to be drawn on speculation he will cut the top rate of income tax, simply stressing that he will deliver what was promised in the Conservative manifesto.
That meant delivering a "fair" welfare system, taking family homes out inheritance tax and helping low and middle income families.
Andrew Marr also draws a blank when he pushes the Chancellor on whether he will scrap "non dom" tax status.
Disability benefits
The Andrew Marr Show
George Osborne is not looking at taxing disability benefits, he tells Andrew Marr, but refuses to be drawn further on what his plans are in this area.
Housing benefit
The Andrew Marr Show
George Osborne indicates there will be further cuts to housing benefit on Wednesday.
"If I don't make these cuts in welfare," he says, he would have to cut public services.
Benefit cap cut
The Andrew Marr Show
George Osborne says the benefit cap will be cut to £23,000 in London but it will be "lower than that in the rest of the country".
He declines to say how much lower. It will no doubt be revealed in the Budget.
Osborne on taxes
Osborne on tax credits
The Andrew Marr Show
Chancellor George Osborne says the best way to help low and middle income people is to make "sure they keep more of their own money" through tax reforms.
The tax credit system is hugely expensive, he says, and it needs to be scaled back.
Osborne up
Boost share ownership
The chancellor is never short of advice in the run-up to a Budget.
The Institute of Directors is calling on him to radically simplify the tax system and give more people a stake in the private sector, with "sensible taxes on wealth, and easy-to-understand investment tax breaks" to encourage share ownership.
Leslie backs Cooper
Leslie on benefits cap
Leslie on benefits cap
The Andrew Marr Show
Labour now backs the government's benefits cap. They are expected to focus their attacks on Wednesday on productivity and infrastructure spending instead.
This is certainly the tone Chris Leslie is striking in his Marr interview.
"You don't deal with your deficit without strengthening your economy," he says.
Leslie on tax credits
Chris Leslie up first
The Andrew Marr Show
The new shadow chancellor, Chris Leslie, is first in the Marr firing line.
He says he wants to see more from the chancellor on productivity on Wednesday - a perennial problem in the British economy.
He also calls for low pay and rising housing costs and calls for a "U-turn" on the living wage.
And he urges Mr Osborne not to "pull the plug" on tax credits for working people, which could hit some of the most "vulnerable" people in society.
There is speculation Mr Osborne will cut tax credits in his Budget to help meet the £12bn in welfare savings it needs to make.
Osborne coming up
The Andrew Marr Show
George Osborne is the main guest on the Andrew Marr show - he's sure to be quizzed about plans to charge local authority and housing association tenants in England who earn more than £30,000 - or £40,000 in London - the market rent for their homes.
Read more here.
Good morning
Hello and welcome to our rolling coverage of the big political stories in a day that is sure to be dominated by speculation about Chancellor George Osborne's Budget on Wednesday and today's Greek referendum.