© Licensed to London News Pictures. 08/01/2017. London, UK. People take part in the annual 'No Trousers Tube Ride' event on the London Underground on Sunday, 8 January 2017 hours before a 24-hour strike action starts on the London Underground services. Participants travel on the tube without trousers as part of the event to surprise other passengers. The tradition started by a collective called 'Improv Everywhere' in New York 15 years ago. Photo credit: Tolga Akmen/LNP
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