London selfies were found to have a score of 0.55, compared with the average of 0.62 across Berlin, New York, Sao Paulo, Moscow and Bangkok.  

The analysis of images uploaded publicly on to Instagram in September found that the London style of selfie-taking was also one of a restrained upright pose.

It found that twice as many women as men are selfie-takers in London. London men, who took selfies, tended to be older than those in other cities, averaging about 28 years old, and people of both genders favoured an upright pose over a jaunty angle.

Almost double the proportion of people were found to be wearing glasses in London than in the five other cities analysed.

Claire Catterall, director of exhibitions at Somerset House, where the pictures and their analysis formed the part of an exhibition that explored the explosion of social media and what it reveals about modern society, said the unhappy selfie faces of Londoners should not be mistaken for being miserable but "thinking they are too cool to smile".

Catterall said the selfie has now become a key piece of data to document an entire generation.


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