Wasp (Gollancz SF collector's edition)

Blurb

Wasp is a 1957 science fiction novel by English author Eric Frank Russell. Terry Pratchett stated that he "can't imagine a funnier terrorists' handbook." Wasp is generally considered Russell's best novel.
The title of Wasp comes from the idea that the main character's actions and central purpose mimic that particular insect; just as something as small as a wasp can terrorise a much larger creature in control of a car to the point of causing a crash and killing the occupants, so the defeat of an enemy may be wrought via psychological and guerrilla warfare by a small, but deadly, protagonist in their midst.