UK head of counter-terrorism policing, Neil Basu, right, and chief medical officer for England, Sally Davies, in London. British police say a critically ill couple were exposed to Novichok. AP
UK head of counter-terrorism policing, Neil Basu, right, and chief medical officer for England, Sally Davies, in London. British police say a critically ill couple were exposed to Novichok. AP

Novichok poisoning: UK couple exposed to same nerve agent as Russian spy and daughter