Kelsey Sinclair Heath was born on November 22, 2001, in Crewe, England, to Sabrina Heath and Jamie Sinclair. Growing up, Kelsey experienced a nomadic childhood, moving frequently across the UK. At the age of nine, she found stability when placed in the care of her grandparents, who became a central influence in her upbringing.

With a deep passion for storytelling and visual creativity, Kelsey pursued A-levels in English Literature, Art, and Film Studies, laying the groundwork for a career in filmmaking. A lifelong fan of horror, fantasy, and science fiction, she found inspiration in both television and film, with the iconic slasher Scream standing out as her all-time favorite movie.

In 2021, Kelsey began studying Digital Film Production at the University of Suffolk, honing her skills in the art and craft of filmmaking. She graduated in 2024, joining the ranks of promising filmmakers with a strong foundation in narrative construction, cinematography, and genre exploration.