Philip Reeve

In a future land once known as Britain, nomad tribes are preparing a terrifying enemy - the first ever mobile city. Before London can launch itself, young engineer Fever Crumb must journey to the North. In the weeks before battle begins, Fever finds a mysterious black pyramid. The secrets it contains will change her world forever.

Astra's ship is in trouble. There's something very sinister lurking in the canteen. A cakey monstrosity on the war path. And then there's the Poglites - a space salvage crew who have invaded the ship in their quest for spoonage! Astra and her robot friend Pilbeam are the only things standing in the way of the ship's destruction! Originally publishe

The secrets of flight have been lost for thousands of years. But in a faraway corner of a ruined world, a mysterious boy is building a flying machine. Birds help him, and so does an engineer called Fever Crumb. But powerful enemies stalk them - either to possess their invention, or to destroy the secrets of flying forever.