Most notably, the end credits, which usually read, “Introducing [Actor] as The Doctor,” were different. It only said, “Introducing Billie Piper.” She has yet to be credited as The Doctor — and not just there. The statements from Piper and showrunner Russell T Davies are carefully worded as well.

Two years after Ncuti Gatwa took on the mantle of Doctor Who from David Tennant, the actor is leaving the show, with Billie Piper set to take over. Gatwa recently shared his thoughts on his brief but eventful stint as the extra-terrestrial,