 " The Girl Who Waited " featured little of the Doctor , due to multiple episodes being filmed at the same time . Gillan played the older version of herself and prosthetics were applied to make her appear older . The episode was filmed on a lower budget , and MacRae decided to make the main sets all white in colour . " The Girl Who Waited " was seen by 7 @.@ 6 million viewers in the UK and received positive reviews from critics . 
