No Blade of Grass

No Blade of Grass is a 1970 apocalyptic dystopian film co-written, directed and produced by Cornel Wilde and starring Nigel Davenport, Jean Wallace, and John Hamill. It is an adaptation of John Christopher's novel The Death of Grass (1956) and follows the survivors of a plague that has hit London in the not too distant future. When London is overwhelmed by food riots caused by a global famine, a man tries to lead his family to safety to a remote valley in Westmorland.