: Tiffy's manipulative and controlling ex-boyfriend who continues to intrude on her life throughout the story.
: According to Leon's girlfriend Kay's strict rules, Leon has the flat during the day (9:00 AM – 6:00 PM), and Tiffy has it on nights and weekends. The Flatshare
: Tiffy's best friends (a lawyer and a therapist, respectively) who are skeptical of the flatshare and help her recognize Justin's abuse. Justin. : Leon's younger brother
: An eccentric assistant editor with a colorful sense of style. She is recovering from an emotionally abusive relationship with her ex, Justin. The Flatshare
: Leon's younger brother, who is wrongfully imprisoned for armed robbery.