Half-naked London commuters braved the bitter cold in their underwear and boxers - all in the name of humour.
No Trousers Tube Ride 2018 in pictures: Half-naked Londoners ride the Underground as part of global stunt, London Evening Standard
London commuters strip down to underwear for 'No Trousers Day
Tube passengers drop their TROUSERS for No Pants Day ahead of Underground strike
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No Pants Tube Day sees Londoners flash the flesh on Underground
No Trousers Tube Ride brings laughter - and more smiles as strikes are suspended - Mirror Online
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London commuters strip down to their pants for No Trousers Tube Ride – The Irish News
No trousers on tube ride hi-res stock photography and images - Alamy