...to mark 80th anniversary of end of World War II. The installation will include nearly 30,000 of the original 888,246 ceramic poppies and will be designed to resemble a 'wound' at the heart of the Tower, which itself was bombed during the Blitz and still bears the scars of the raids.

https://www.bbc.co.uk/news/articles/cy87gqjjl62o