who were some of his co-stars in this season?
Pearl Mackle, Bill Potts, Matt Lucas among others
Doctor Who (series 10)
Peter Capaldi reprised his role as the Twelfth Doctor in his third and final series; he left after the 2017 Christmas special, while Pearl Mackie portrays the newest companion Bill Potts, after the departure of Jenna Coleman. To avoid leaks while casting the new companion, the production team used the word "Mean Town", an anagram of "Ten Woman"; this is a reference to the fact that Bill is the companion of the tenth series, and was revealed by the casting director Andy Pryor to Radio Times. Mackie made her first appearance in the first episode of the tenth series, and portrays the first openly gay companion. Matt Lucas returned in his role as Nardole, as seen in the 2015 and 2016 Christmas specials "The Husbands of River Song" and "The Return of Doctor Mysterio", in a regular role that started from the first episode of the series, but would not appear in every episode.
when do the new season of doctor who start On 15 April 2017 which actor plays the titular character in it? Peter Capaldi
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Doctor Who (series 10) [SEP] Casting
Peter Capaldi reprised his role as the Twelfth Doctor in his third and final series; he left after the 2017 Christmas special, while Pearl Mackie portrays the newest companion Bill Potts, after the departure of Jenna Coleman. To avoid leaks while casting the new companion, the production team used the word "Mean Town", an anagram of "Ten Woman"; this is a reference to the fact that Bill is the companion of the tenth series, and was revealed by the casting director Andy Pryor to Radio Times. Mackie made her first appearance in the first episode of the tenth series, and portrays the first openly gay companion.