North Korea's displeasure at a poster in a hair salon that poked fun at their leader's unusual hairstyle has reached the corridors of power in Whitehall.
The Foreign Office has confirmed it received a letter from the North Korean embassy earlier this week complaining about the picture of Kim Jong-un that was displayed in a London salon's window emblazoned with the words "Bad Hair Day?".
Mandarins received the letter earlier this week and are now considering a response, a spokesman said.
Staff at M&M Hair Academy in South Ealing, west London, were confronted by two men claiming to be North Korean officials over the marketing stunt earlier this month .
North Korean dictator Kim Jong-un sports a striking hairdo which is shaved around the sides and then longer on top.
The salon put the poster up to advertise an offer for men's haircuts in April after reading reports that male students in North Korea had been told that they must adopt the same haircut as their leader.
The reports from the highly secretive country have been called into question after visitors said there had been no noticeable change in young men's hairstyles, and experts on North Korea dismissed the idea.
After the officials paid a visit to the salon, manager Mo Nabbach and the North Korean embassy both reported the incident to police.
Scotland Yard said it had spoken to all parties and found that no offence had taken place.
Barber Karim Nabbach, 26, yesterday said that staff at the salon did not realise the North Korean embassy was a 10-minute walk away when they put the poster up.
Mr Nabbach said that after the police had been contacted the salon had not heard anything further from the officials.
He said: " We haven't had any trouble since then, if anything the poster has become a tourist attraction. It was just something that had been in the news, and the North Korean officials didn't even have the haircut.
"We always put up little offers in the window, it's harmless. We were just making light of a bad situation in North Korea."