The novelistation of 'Robot' was re-titled as 'The Giant Robot' and was written by Terrance Dicks.
Back Cover Blurb
'Look, Brigadier! It's growing!' screamed Sarah.
The Brigadier stared in amazement as the Robot began to grow...and grow...swelling to the size of a giant!
Slowly the metal colossus, casting its enormous shadow upon the surrounding trees and buildins, began to stride towards the Brigadier. A giant metal hand reached down to grasp him... Can Doctor Who defeat the evil forces controlling the Robot before they execute their plans to blackmail - or destroy - the world?