REUTERS/Matthew Cavanaugh
Cameron's microphone picked up a conversation with former New York City mayor Michael Bloomberg while the two were surrounded by TV cameras. The prime minister was in New York for the UN Assembly. He did not seem to be aware that his microphone was on.
At one point, Cameron was heard saying that the vote "never should have been that close." He added: "I find these polling companies and I want to sue them for my stomach ulcers because of what they put me through."
Cameron waged a hard campaign against Scottish independence in the lead-up to referendum on Sept. 18. He was even reported to have joked that "assassination" would be preferable to continuing to deal with the vote.
Officially, the Queen held a neutral position, although there's evidence to suggest that she was rooting for a No vote.
The proof is in the purr.
Here's video of the conversation from The Telegraph: