Black Doves review – Ben Whishaw, Keira Knightley and Sarah Lancashire are spine-tinglingly good

Series two of this rambunctiously entertaining espionage drama might be implausible. But it’s a magnetically acted tale of friendship, with moments of genuine poignance

Is Helen Webb Britain’s busiest mum? Or Britain’s least busy mum? On the one hand, she’s got two kids, is the wife of the recently promoted prime minister and also a deep cover spy, who spends her days passing information about her husband’s work to a shady intelligence organisation and her nights on covert missions which often involve acts of bloody slaughter. Yet the reason she can do all this is that nobody expects her to do anything at all: she doesn’t have to look after her children (she has an ever-present nanny – who, unbeknown to Helen, is in fact another spy), manage the household…