Dame Vera Lynn recalls her experience of the Battle of Britain
Seventy years ago, Winston Churchill made one of his most stirring speeches.
In his address, given in Parliament, he praised the Battle of Britain aircrews who had fought off the threat of Nazi invasion during the summer of 1940. It become known as "The Few".
Armed forces sweetheart Dame Vera Lynn, and one of the surviving members of 'The Few' Flight Lt William Walker of 616 Squadron, spoke to the BBC's Nick Higham about their experiences of the Battle of Britain.
To mark the anniversary, the speech will be replayed outside Churchill's war-time bunker in Whitehall, at 1552 BST - precisely 70 years since Churchill stood up to give the address in Parliament.
It will be followed shortly afterwards by a Spitfire and Hurricane fly-past over Whitehall. You can watch those events on the BBC News website.