What does David Cameron wear on his lapel?

As others have said, it's a paper version of a poppy flower, Papaver rhoeas, worn to commemorate the nation's war dead. read more

During the visit she clipped a pin on the lapel of David Cameron’s jacket, an experience she described as “amazing.” “I made 14 lapel pins for the G8 leaders and 11 more with different designs for their sherpas. To see the eight world leaders wearing them on TV was incredible. They all now have a piece of my jewellery. read more

Dylan Morris, a Twitter user in Plymouth, England, noticed a Facebook photograph of British Prime Minister David Cameron appeared to have been digitally altered to include a flower pinned to Cameron's lapel. Morris checked with another photograph. Yes, that poppy had clearly been added in. read more