Mandatory Credit: Photo by Dinendra Haria/REX/Shutterstock (6907362f) Sadiq Khan wearing a poppy. Sadiq Khan launches London Poppy Day, London, UK - 01 Nov 2016 The Mayor of London Sadiq Khan meets personnel from the British Armed forces selling poppies at Leyton Underground Station to help raise awareness of The Royal BritishLegion's London Poppy Day.