People have been going trouserless on the annual ride since 2009
No Trousers Tube Ride 2023: Londoners strip off as annual event returns - Yahoo Sports
London Underground's No Trousers Tube Ride in pictures from 2014 to 2023 - MyLondon
No pants day tube ride hi-res stock photography and images - Alamy
466 No Trousers Tube Ride Photos & High Res Pictures - Getty Images
325 London Underground No Pants Subway Ride Stock Photos, High-Res Pictures, and Images - Getty Images
London My Housemate's a Mermaid
No pants day tube ride hi-res stock photography and images - Alamy
In Pictures: London's No Trousers Tube Ride - Secret London
Underwear on full display as No Trousers Tube Ride returns to London - Jersey Evening Post
Shaker Re-photo
London Underground's No Trousers Tube Ride in pictures from 2014 to 2023 - MyLondon
No pants day tube ride hi-res stock photography and images - Alamy