Where did the Doctor get his TARDIS from?
Bored with stagnant Time Lord society, the Doctor decided to leave Gallifrey to see the Universe. Gaining access to a TARDIS maintainence bay, the Doctor entered the sole TARDIS present (a broken down Type 40) wherein he immediately travelled into Gallifrey’s past and encountered Susan (see below). The Doctor’s Type 40 had previously belonged to a Time Lord Chancellor known as Marnel Gates who the Doctor later encountered in his 8th incarnation (‘The Gallifrey Chronicles’).