Children of Men movie (2006) and novel (1992)

Set in London, England, in 2027, the 2006 movie Children of Men, based on the P.D. James novel The Children of Men (1992), projects a world in which children can no longer be conceived. The last child at age 18 has just died and London is descending into chaos until a woman is discovered who is pregnant. Fanatics want her dead but her protectors will do anything to keep her alive and deliver her to a safe haven.