Several commuters in London left their pants home yesterday to ride London’s Tube half-naked in celebration of the worldwide No Trousers on the Tube Day.

The annual event now celebrated in more than 60 countries around the world ‘permits’ semi-dressed men and women to ride the Tube as they would normally do, but dressed without any pants.

As usual, other commuters looked at those celebrating the day in shock.

Organiser Ivan Markovic told DailyMail: ‘We have been running it for eight years here. We travel the Tube on the first Sunday of the year and just make a scene. We make people smile. We make people laugh and we get some lovely reactions.’

Organisers of London’s No Trousers on the Tube Day said there are only two requirements: “1) Willing to take trousers off on the Tube. 2) Able to keep a straight face about it.

If you missed it, you can note the date down for next year.

Flip to the next pages for photos…