Do you think London needs to get rid of the hump and show its pearly whites? If so, you may not be alone.

According to research, 90% of Londoners believe their fellow citizens need to wipe the frowns of their mugs and smile more often.

And more than a quarter (29%) of people from the capital, surveyed by Primula Cheese as part of its Spread a Smile campaign, say they rarely laugh or smile while those that do estimate they smile around only 15 times a day.

TV presenter Angellica Bell, who is taking part in the campaign, said: “A simple smile can make a difference to our day-to-day lives, whether lifting our own mood or making someone we see feel better.

“Smiling raises your spirits and makes other people happy - it’s a very powerful expression and, like any habit, it gets much easier with practice.”

Throughout October and November, Primula will donate 20% of the profits from the sale of its special ‘Just Say Cheese’ tubes sold to Make-A-Wish UK.