David Cameron rebuked by Buckingham Palace after revealing details of private communications with the Queen.

The former UK prime minister suggested he had successfully persuaded the monarch to intervene in the 2014 Scottish independence referendum.

Communications between politicians and the Queen are meant to remain private by convention.

A royal source told the BBC that Cameron's claims "serves no-one's interests."

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David Cameron has suffered a rare public rebuke by Buckingham Palace after the former prime minister of the United Kingdom revealed the details of private communication between his office and the Queen.

Cameron told the BBC on Wednesday that he had asked for the Queen to intervene in the 2014 Scottish independence referendum.

"I remember conversations I had with my private secretary and he had with the Queen's private secretary and I had with the Queen's private secretary, not asking for anything that would be in any way improper or unconstitutional but just a raising of the eyebrow even you know, a quarter of an inch, we thought would make a difference," Cameron said.

Following his request, the Queen told a member of the public that she "hoped people would think very carefully about the future," a comment widely interpret as a warning about the risks of breaking up the UK.

Read more: Boris Johnson denies lying to the queen in order to shut down Parliament

'It makes it very hard for the relationship to thrive'

The Queen has long sought to remain impartial in UK politics and conversations between the monarch and the prime minister remain secret by convention.

However, Cameron's comments prompted a royal source to tell the BBC that there was "an amount of displeasure" from the monarch about the ex-prime minister's remarks.

They said that "it serves no one's interests" for conversations between the prime minister and the monarch to be made public.

"It makes it very hard for the relationship to thrive," they added.

The BBC added that their source had expressed "something coming pretty close to real anger," about Cameron's comments.

It is not the first time that Cameron has upset the Palace, after revealing details of private conversations with the Queen.

Following the result of the Scottish independence referendum, in which a majority of Scottish people voted to remain in the UK, Cameron was forced to apologise after revealing that the Queen had "purred down the line" about the news.

The Scottish National Party, which campaigned for Scotland to become independent, seized on Cameron's latest remarks as evidence that he had sought to unduly influence and politicise the monarch.

Pete Wishart, the SNP MP for Perth and North Perthshire, said: "So what we have is Cameron manipulating the head of state into adopting a position on the indyref and Johnson lying to her about the suspension of Parliament. That's the Tories."

Speaking on Radio 4's Today programme on Thursday, Cameron sought to play down the row.

He said: "I had conversations with private secretaries and the like, but I never asked for anything improper to be done."

"I don't want to say anything more about this and some people would say I've already said too much."