Queen caught on camera calling Chinese officials 'very rude' in unguarded comments

Comments come hours after Prime Minister is filmed telling the monarch that Afghanistan and Nigeria are 'fantastically corrupt'

The Queen has been overheard telling a senior police officer she found Chinese diplomats to be "very rude" during President Xi Jinping's state visit to the UK.

The longest-reigning British monarch is reported to have made the unguarded comments while talking to a Metropolitan Police Service commander, hours after David Cameron was filmed telling her Afghanistan and Nigeria were "fantastically corrupt".

She began her conversation with Commander Lucy D'Orsi by quipping "oh, bad luck" when a palace official described how the officer had been assigned as Gold Commander for the state visit of Chinese premier Xi Jinping in October.

During the discussion, recorded by a BBC cameraman, the official was heard telling the Queen the police had been "seriously undermined by the Chinese" in their handling of the visit, but the officer had managed to "hold her own".

As Ms D'Orsi asked if she knew it had been a "testing time", the Queen interjected: "I did."

The officer described how Chinese officials walked out of a meeting with Barbara Woodward, British ambassador to China, at Lancaster House, telling them the trip was off.

The Queen said: "They were very rude to the ambassador."

The remarks were recorded as the Queen greeted guests in the gardens of Buckingham Palace for an event marking her 90th birthday.

The Metropolitan Police said it would not comment on the private conversation.

Earlier on Tuesday David Cameron was caught on camera making the unflattering comment about Afghanistan and Nigeria during a conversation with the Queen ahead of an anti-corruption summit, which he is hosting in London on Thursday.