Every year since 2006, Brighton has joined World Naked Bike Rides around the world to celebrate cycling and the human body. The ride demonstrates the vulnerability of cyclists on the road and is a protest against car culture.
Over 1,000 riders took part in 2015. Following negotiations with Sussex Police, full nudity is permitted at the event.
The event is one of several UK and worldwide rides happening around the same time, including Portsmouth, Southampton and London.