The series has a reoccurring musical cue which is not an original composition for the show, but is actually a remixed instrumental of the song "Pepper" by the Butthole Surfers. The song is about societal criticism when being viewed by others and brushes with death. This ties back to the lead character Jen who is looked down upon for not having super powers and is told how they are going to die in the first episode.
The show often displays pedestrians using super powers in the background on the streets of the UK, in episode 2, a pedestrian is shown to have a blurred face while using a phone. No hint is given if this is a super power or an actual civilian who refused to clear the street during filming.
Though they refer to the cat as "he", tortoiseshell cats are 98 percent female.