11/05/2016 4:25 PM AEST | Updated 11/05/2016 9:28 PM AEST

Queen Caught On Camera Making Rather Undiplomatic Remarks About Chinese Officials

Just hours after Cameron’s blunder.

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LONDON, ENGLAND - MAY 10: Queen Elizabeth II speaks to Prime Minister David Cameron during a reception in Buckingham Palace to mark the Queen's 90th birthday on May 10, 2016 in London, England. (Photo by Paul Hackett - WPA Pool / Getty Images)

The Queen has been caught on camera describing Chinese officials as "very rude" while in conversation with a senior police officer at an event celebrating her 90th birthday. 

The monarch 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".

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The Queen talking to David Cameron earlier in the day

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, reports the Press Association. 

In China, BBC World coverage of the remarks was censored.

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

Speaking on BBC Radio 4's Today Programme, Kerry Brown, a former First Secretary at the British Embassy in Beijing, said that the comments showed the "tension and effort" which lay beneath the surface of the event.

He said: "It shows that these meetings when they look so good there is underneath obviously a huge amount of tension and effort."

However, Brown did not believe that the incident was a major issue and said: "This is nothing more than a bit of entertaining sideshow."

Former Liberal Democrat leader Menzies Campbell echoed his views.

He said that there would be "irritation" both at the Palace and in government.

He added: "I don’t think there will be any lasting damage but it’s an irritation and it’s an irritation people could do without."

It isn't the first time a Royal has upset the Chinese. In 1986 Prince Philip said to British students in China: "If you stay here much longer, you'll all be slitty-eyed."

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.

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