WATCH: David Cameron caught on camera calling Afghanistan and Nigeria "fantastically corrupt"

British PM seemingly unaware his conversation with the Queen was being recorded

WATCH: David Cameron caught on camera calling Afghanistan and Nigeria "fantastically corrupt"

David Cameron greets Britain's Queen Elizabeth at a reception in Buckingham Palace earlier today | PA Images

British prime minister David Cameron has been caught on microphone describing Afghanistan and Nigeria as "fantastically corrupt" during an exchange with the Queen.

The Tory leader was speaking ahead of an anti-corruption summit later this week, and made the comments as he described who will be attending.

Mr Cameron was seemingly unaware his conversation with the Queen in front of the Archbishop of Canterbury, House of Commons Speaker John Bercow and Leader of the House of Commons was being caught on microphone.

In footage of their exchange published by ITV News, the Prime Minister tells the Queen: "We had a very successful Cabinet meeting this morning, talking about our anti-corruption summit.

"We have got the Nigerians - actually we have got some leaders of some fantastically corrupt countries coming to Britain."

He continued: "Nigeria and Afghanistan - possibly two of the most corrupt countries in the world."

The Archbishop then attempts to rescue the situation by saying: "But this particular president is actually not corrupt."

After his comments, Mr Bercow jokes: "They are coming at their own expense one assumes?"

To which Mr Cameron responds: "Everything has to be open. There are no sort of closed-door sessions.

"Everything has to be in front of the press. It's going to be ... It could be quite interesting."

'Egg on his face'

Labour has accused the Prime Minister of having "egg on his face" after the incident.
Wes Streeting, MP for Ilford North, claimed that "for all his talk about corruption he's failing to act" when it comes to corruption.

A Downing Street spokeswoman said the Presidents of Nigeria and Afghanistan "have acknowledged the scale of the corruption challenge they face in their countries", and that "the UK stands shoulder to shoulder with them" in their fight against it.

"We cannot comment on a conversation between the PM and the Queen," she added.

The summit, which Mr Cameron has cited in response to anger following revelations over off-shore accounts contained in the Panama leaks, is due to take place on Thursday.

Both Afghan President Ashraf Ghani and Nigeria President Muhammadu Buhari are due to attend the event. 

Mr Buhari is expected to give a keynote speech in London tomorrow before the official opening.

Afghanistan is second from bottom in the campaign group Transparency International's latest Corruption Perceptions Index, while Nigeria is 136th out of 168 countries.