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Here's Peter on set, checking his lines before the cameras roll. #DoctorWho #DrWho #BTS #BehindTheScenes #whovian #fandom

A post shared by Doctor Who (@bbcdoctorwho) on Aug 14, 2015 at 3:13am PDT

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Is this an alien language? What does it mean? And where is it from? #DoctorWho #DrWho #BehindTheScenes #BTS #whovian #fandom

A post shared by Doctor Who (@bbcdoctorwho) on Aug 15, 2015 at 2:50am PDT

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Inspirational messages #BehindTheScenes on #DoctorWho! #DrWho #BTS #whovian #fandom

A post shared by Doctor Who (@bbcdoctorwho) on Aug 19, 2015 at 5:39am PDT