A vast display of almost 900,000 ceramic poppies was installed in the Tower ... and were sold to the public for £25 each after Remembrance Day in 2014, raising more than £15million for service ...

Nearly 30,000 of the flowers will 'pour' down the tower and onto its surrounding lawn while the display is in place ...

The poppy has a long association with Remembrance Day. But how did the distinctive red flower become such a potent symbol of our remembrance of the sacrifices made in past wars? Scarlet corn ...