Doctor Who and the Dalek Invasion of Earth — Terrance Dicks

The Tardis lands in a London of future times--a city of fear, devestation and holocaust...a city now ruled by Daleks. -- The Doctor and his companions meet a team of underground resistance workers, among the few survivors, but after an unsuccessful attack on the Dalek spaceship, they are all forced to flee the capital. -- A perilous journey through England finally brings them to the secret centre of Dalek operations...and the mysterious reason for the Dalek invasion of Earth.