The Prime Minister was caught out on the Late Show when Mr Letterman asked him to name the author of Rule Britannia and he answered incorrectly.
He also failed to explain the meaning of “Magna Carta”.
After his errors, Mr Cameron – educated at Eton and Oxford – joked: “That is bad, I have ended my career on your show tonight.”
Mr Cameron also faced jibes about his social background and public school accent and admitted he is “not very popular at the moment.”
The interview was recorded in the Broadway home of the Late Show in New York before Mr Cameron flew to Brazil on a trade mission. » | James Kirkup, in New York | Wednesday, September 26, 2012
