The Piglet Files is a British sitcom produced by London Weekend Television (LWT).

His new bosses, Maurice Drummond and Andrew Maxwell, assign him to the technology division, and he insists on having a codename, to further his identity in the world of spying.

The first codenames listed were Panda, then Panther, but those are already in use, they then incorrectly stated that Puma was the next available name before correcting themselves and assigning Peter the next name..."Piglet".

Piglet routinely joins the other field agents on missions—mainly to ensure that MI5 gets its equipment back.

Peter "Piglet" Chapman must now face down Soviet assassins and double agents while keeping his identity as an MI5 technician secret from everyone else, including his wife Sarah.