The Chase

On an occasion where the Twelfth Doctor was away from his office in St Luke's University, Nardole attempted to avoid opening the door to Ratatoskr and the 47th Maurading Horde of Onagatis 5 by using the excuse he was watching The Chase. (PROSE: I Am the Doctor)

Upon seeing a stained glass window depicting Graham O'Brien, the Thirteenth Doctor said that it was "either [Graham] or him from the gameshow". (PROSE: The Good Doctor)

Behind the scenes
In the real world, is a British game show hosted by Bradley Walsh, who also plays companion Graham O'Brien. The Chase might also refer to the Doctor Who serial of the same name.