London Spy is a British-American five-part drama television serial created and written by Tom Rob Smith that aired on BBC Two from 9 November until 7 December 2015.

London Spy begins as the story of two young men: Danny (Ben Whishaw)—gregarious, hedonistic, and romantic—falls in love with Alex (Edward Holcroft)—asocial, enigmatic, and brilliant.

The series was commissioned by Janice Hadlow and Polly Hill,[3] and produced by Guy Heeley for Working Title Television.

Reviewing Episode One for The Guardian, Lucy Mangan called it "an unutterably delicious, satisfying dish," with "Jim Broadbent, in fully teddy-bear-carrying-a-switchblade mode.." and Whishaw "the most powerful actor ever made out of thistledown and magic.

"[16] Following the screening of the final episode, Gabriel Tate wrote in The Guardian that the series had "a somewhat daft and implausible ending, but there was still much to enjoy, mostly from the brilliant Ben Whishaw.

"[17] Benji Wilson in The Daily Telegraph called it "wonderful and infuriating in equal measure..Has there ever been a television series that's frustrated as much as London Spy (BBC 2)?

Over five weeks this contemporary thriller has scaled giddy heights and then plumbed ludicrous depths, gone from being completely gripping to turgid as hell, thrown up single scenes of startling brilliance then followed them with some preposterous self-indulgence... London Spy's potentially great script was in desperate need of some doughty editing.