Series 14 was a series of Doctor Who produced by BBC in collaboration with Bad Wolf,[1] which had been acquired by Sony.[2][3] It entered a new era of the programme as former showrunner and executive producer Russell T Davies made his return to the role he effectively started.[4] Davies' original era began with the series revival in 2005 and ended in 2010 with the Tenth Doctor's regeneration in The End of Time, thirteen years before this series.