Doctor Who: The Monthly Adventures, formerly titled the Main Range, is a series that consists of full-cast audio dramas based on the British science fiction television programme Doctor Who, produced by Nicholas Briggs and Big Finish Productions and starring one of the original actors to play The Doctor on television in the classic era of the programme. The main audio series currently feature the Fifth, Sixth and Seventh Doctors, and have since developed the pattern of thirteen releases per year, one every month with two in September or December. In May 2020, Big Finish announced that the Main Range would conclude with its 275th release in March 2021, to be replaced with regular releases of each Doctor in their own boxsets throughout the year from January 2022. With 275 releases over 22 yea