Robotic dinosaurs have appeared in Oxford Street in the heart of London. They are populating a site that is awaiting development opposite Selfridges. The animatronic dinosaurs which include examples of Velociraptor, Diplodocus and Tyrannosaurus rex move their heads, tails and arms. They are set within a Jurassic scene of trees and a watering hole. The exhibition is temporary until the end of April this year when building work will begin on the new commercial and residential properties.