>> The Queen, causing a diplomatic incident at a Buckingham Palace garden party. Introduced to the police officer in charge of security, during Chinese President Xi Jinping's state visit last year.>> Bad luck.>> The officer describes what she calls a very testing time.>> I think at the point that they walked out of Lancaster House and told me that the trip was off.
I felt sad>> They were very rude to the ambassador.>> The BBC's coverage of the story, blacked out in China, government officials insisting the trip was a success. Xi was treated to full pomp and ceremony, Prime Minister David Cameron and Chancellor George Osborne trying to present Britain and China as firm friends.
>> The Queen's gaffe came just hours after a candid camera moment at a reception for her 90th birthday. Cameron telling her that Afghanistan and Nigeria are fantastically corrupt. Both will be at an anti-corruption summit in London. Unlike other members of the Royal Family, the Queen is normally careful to avoid any undiplomatic language.