https://www.cbr.com/doctor-who-dot-and-bubble-lindy-pepper-bean-ricky-september-betrayal/

In "Dot and Bubble," Doctor Who offered a Black Mirror-style examination of social media, but ended on a harsh look at the people behind the screens.

Every Susan Twist Doctor Who Appearance, Explained (https://www.cbr.com/doctor-who-susan-twist-appearances-explained/)

Keen-eyed Doctor Who fans have noticed actor Susan Twist appearing in several separate roles in the new series, but who is Twist really playing?