[3] In 2009 Mitchell won the Papatango script competition with his darkly comic play "Potentials".
30 to Pluto" was joint winner of the Churchill Theatre's new writing competition and was performed on the main stage as part of their 30th Birthday Gala celebrations.
An extended second series comprising six hour-long episodes was aired in the United Kingdom from 4 May 2014 and from 10 May 2014 on BBC America.
In response to fan interest, Mitchell set up a Go Fund Me page in 2022 to write scripts for a 'third series'.
In 2016, it was announced Mitchell was developing Creature, a horror thriller inspired by Slender Man.