Six of the ceramic poppies from the Tower of London Remembrance display are to be given to Commonwealth leaders at the G20 summit.
David Cameron will present the flowers to the summit's host, Australian prime minister Tony Abbott, fellow PMs Narendra Modi of India, John Key of New Zealand, Stephen Harper of Canada, Lee Hsien Loong of Singapore and President Jacob Zuma of South Africa.
Each of the 888,246 poppies created by artist Paul Cummins represents a British or Commonwealth casualty of the First World War.
The artwork, marking the centenary of WWI, was viewed by an estimated five million visitors.
Mr Cameron said: "The extraordinary poppy display at the Tower of London caught the imagination of so many people across Britain and I wanted to share some of that with my fellow Commonwealth leaders, recognising the sacrifice their countries made to secure our freedom."
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