In an exclusive interview, Sir Alex Younger, codenamed 'C', who steps down from his role after 30 years at MI6 this week, tells FT editor Roula Khalaf the global pandemic has redoubled the secret service's mission and increased its myriad challenges. See if you get the FT for free as a student (http://ft.com/schoolsarefree) or start a £1 trial: https://subs.ft.com/spa3_trial?segmentId=3d4ba81b-96bb-cef0-9ece-29efd6ef2132

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