Planetoid Disposals Ltd. - E. C. Tubb - Bog

In a future where interstellar space travel is commonplace, following the invention of the Nulgrav Drive, planetoids and meteorites pose the only threat to spacecraft. The solution: a space engineering company, Planetoid Disposals Ltd., is created to destroy rogue stellar bodies and sweep the space lanes clear of debris.
With the Galactic Patrol enforcing peace throughout the galaxy, it is a time of prosperity. But when a non-human race finds a way to checkmate the Patrol, it means war with humanity. The Vendians launch their mighty fleet against an unearmed Earth, and only Planetoid Disposals' fleet of ships stands in their way...