David Cameron reveals Queen 'purred' with delight post Scotland no vote

 David Cameron has revealed that the Queen 'purred' with delight when he phoned her to tell her that Scotland had voted no to independence.The British Prime Minister was caught on camera by Sky News, telling Michael Bloomberg that the second longest-reigning British monarch "purred down the line", suggesting that she was pleased with the result, the Guardian reported. However, as the prime minister is forbidden from speaking about his conversations with the monarch, Cameron has breached the convention, which also exposes the Queen, who has so far maintained her traditional neutrality over the issue.The conversation also reveals how worried Cameron was as polls had suggested that the 'Better Together' campaign might lose.