On returning, the group find Anne unconscious and Travers gone. The Doctor informs Lethbridge-Stewart and Knight about the intelligence and the TARDIS; the Colonel decides to recover the TARDIS from Covent Garden station, hoping that it will allow them to escape. The Colonel leads the remaining troops overground to Covent Garden, while Arnold, Evans and a third soldier, Corporal Lane, take a baggage trolley through the underground at the same time to transport the TARDIS on. The Doctor and Anne attempt to build a control box to block the signal between the Intelligence and the control spheres, though the Doctor finds that they are low on components and is escorted above ground by Knight to find more.