Two weeks after 52 people were murdered on London’s transport network, terrorists tried to strike again. How did the UK's domestic security services leverage bulk phone record collection to track down the fleeing bombers? And what was the significance of a gym membership card and abandoned bags in identifying the suspects?

In the final episode of our series, we explore the intense investigation following the foiled 21/7 attacks. From forensic clues and CCTV footage to the dramatic arrests across the UK and Europe, this episode reveals the high-stakes methods used to track down a new wave of terrorists. We confront the intelligence failures and missed opportunities that allowed some plotters to slip through the cracks, and examine the critical role of an al-Qaeda facilitator in Pakistan.

Listen as Gordon and David connect the dots between the 7/7 and 21/7 plots, and explore the legacy of these events on UK counter-terrorism.

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Order a signed edition of Gordon's latest book, The Spy in the Archive, ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠via this link.⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠

Order a signed edition of David's latest book, The Seventh Floor, ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠via this link.⁠

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Email: classified@goalhanger.com

Twitter: ⁠⁠⁠⁠⁠⁠⁠@triclassified⁠⁠⁠⁠⁠⁠⁠

Assistant Producer: Becki Hills

Producer: Callum Hill

Senior Producer: Dom Johnson

Exec Producer: Tony Pastor

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