Nick Clegg has hit back at Home Secretary Theresa May's "appaling" claim that the Liberal Democrats had put "children at risk" by rejecting the "snooper's charter" bill in Parliament.
The Deputy Prime Minister said he had written to May demanding an apology for the "false and outrageous" claim during her speech at the Conservative Party conference this week.
In the address, May said the move by the Liberal Democrats to vote against the draft Communications Data Bill had meant the National Crime Agency had to drop "at least twenty cases" - including some where children's lives were at risk - due to missing communications data.
Clegg said the comments marked a "new low" in coalition government relations - adding that Home Office "inactivity" had instead been to blame.
"To say [...] 'you are putting children at risk' when it's not true is a level of outrageous misinformation I have not witnessed in the four and a half years I have been in this government," he said on his regular LBC phone-in.
The Prime Minister's pledges played well at the Conservative Party conference, but how will voters react.
ITV News' Deputy Political Editor Chris Ship has been gauging reaction in four marginal seats - important election battlegrounds.
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Just how generous are the Prime Minister's announcements on tax?
Prime Minister David Cameron says he wants to put fairness back into the system, giving those who work hard, more money in their pockets.
ITV News Economics Editor Richard Edgar reports:
David Cameron finally offered the electorate a prize for years of austerity: tax-cuts, across the board, for 30 million people.
However further cuts, announced yesterday, would have to be met.
ITV News Political Editor Tom Bradby reports.
Former Tory party donor and insurance businessman Aaron Banks said that he increased his donation to Ukip from £100,000 to £1 million after allegations that former Conservative Foreign Secretary William Hague called him "a nobody".
Mr Banks says he was going to give £100k until Wiiliam Hague called him 'a nobody'
UKIP have announced a donation of one million pounds from former Conservative Party donor Aaron Banks.
BREAKING; UKIP announce donation of one million pounds from Aaron Banks.
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Paul Johnson, director at the Institute for Fiscal Studies (IFS), calculated the tax changes both to the personal allowance and to the 40p tax rate would cost "in the order of £7 billion a year" by 2020.
He told BBC Radio 4's World At One programme: "This will only help income tax payers, it will essentially help anyone with incomes between £10,000 and £100,000."
So how are you going to afford this, well even more dramatic spending cuts or actually what's happened quite often over parts of this parliament is that we've seen other bits and pieces of tax increases to pay for some of the increases in the personal allowance.
David Cameron discussed the portion of his speech which alluded to his son Ivan with his wife before using him as an example in the Prime Minister's attack on Labour.
The Prime Minister said his family know more than most how important the NHS is after going to hospital "night after night" with their disabled son, who was born with a rare genetic condition and died in 2009, aged six.
Aides said Mr Cameron had discussed with his wife whether to include the passage in his speech and that Samantha was "very strongly and personally passionate" about the need to discuss the NHS and its effect on their lives.
For me, this is personal: I am someone who has relied on the NHS and whose family knows more than most just how important it is. Who knows what it is like when you go to hospital night after night with a sick child in your arms knowing that when you get there, there are people who will love that child and care for that child just as if it was their own.
How dare they suggest I would ever put that at risk for other people's children. How dare they frighten those who rely on our National Health Service.