Doctor Who stars Bradley Walsh and Tosin Cole won't return after the holiday special

TheWrap

“Well as the Doctor I will say that the fam as a four is no more,” Jodie Whittaker said of Walsh and Cole's appearances in the Revolution of the Daleks New Year's Day special. Doctor Who boss Chris Chibnall says the storyline in which Graham and Ryan leave the series in the holiday special is “very emotional” and the team has “been in tears watching it."