Doctor Who episode 308: The Curse of Peladon – Episode One (29/1/1972)
There’s a line in this episode which goes without comment, but recognises that the new format invented by Derrick Sherwin in 1969 has been abandoned: ‘This is the TARDIS’s first test flight since I got it working again.’ Unlike Colony in Space, which (we’re reminded here) required a set-up scene with the Time Lords, here it’s almost taken for granted that the Doctor is a time and space traveller again (and has bought himself a fancy new orange jacket to celebrate). But for now, to all intents and purposes, the Daleks are back, the Doctor has the ability, however badly, to pilot the TARDIS, and UNIT are nowhere to be seen. Letts and Dicks have successfully reasserted the status quo ante-Sherwin.