When does Garth Marenghi's Darkplace return?

Garth Marenghi's Darkplace is a British horror parody television series created by Richard Ayoade and Matthew Holness for Channel 4 in the 1980s. The show focuses on fictional horror author Garth and his publisher Dean Learner. The series is presented as a special release of the fictional television series Darkplace. Within the reality of the show, Darkplace was produced in the 80s, but never broadcast anywhere but Peru, eventually becoming a lost series. In 2004, due to the "worst artistic drought in broadcast history", Channel 4 decided to air six original episodes.