Yes Minister S02E03 - The Death List

Yes Minister (1980)
S02E03 The Death List
Episode Overview
Upon discovering that the secret service had been surveilling him during his time in the opposition, Jim resolves to introduce a bill aimed at limiting such surveillance. However, he soon realizes that he’s been targeted by a terrorist organization, placing him on their death list. To track down the culprits, he concludes that the only option is to monitor phone communications, setting off a dangerous game of cat and mouse.