Rhashan Stone (Major Oliver Sinclair) & Jimi Mistry (Latif) also worked together on episode 1.3, The Entire History of You (2011), of Black Mirror (2011) as Jeff & Paul respectively.
The series on DVD sold in Australia starts this episode as #1, season 1.
Stonebridge and Scott check in as Mr. Langly and Mr. Byers. Langly and Byers were the names of two of the Lone Gunmen from The X-Files (1993) and it's spin-off The Lone Gunmen (2001).