Ziggy's costume is the same one that was worn by Vulva (David Walliams) the performance artist in Art (1999).
During the scene where the crew are in jail, there is a bunkbed amongst the single beds - Rimmer is seen lying on the bottom bunk, and Lister climbs onto the top bunk, echoing their sharing of bunks in their crew quarters on Red Dwarf.
Kryten makes fun of Rimmer, asking why he collects Napoleonic soldiers and suggesting that, when one of the toy soldiers saves the crew, Kryten will eat his crevice brush. In S03E02, Marooned, it's revealed that Rimmer collects models of Napoleonic soldiers and, while he and Lister are stuck on a frozen moon, Rimmer eventually offers to burn them to warm Lister and save his life.
The episode was released online a week early as part of the Dave Channel's "UK TV Play" service. The episode could be streamed online from the 19th of October.