ट्रिविया

Monica Grey's character, Paula Quatermass, was merged with another character, an unnamed technician, shortly before the broadcast, which resulted in her character often talking to herself and answering her own questions.

Several episodes were preceded by a warning that the BBC considered it "unsuitable for children, or people with a nervous disposition."

Thirty workers from the Shell refinery participated in the riot scenes filmed for The Frenzy (1955).

Writer Nigel Kneale could not think of a dramatic title for the story, so he simply named it "Quatermass II" and justified it to himself by giving the same name to the nuclear-powered rocket which features centrally in the story.

It was revealed in Ringstone Round (1979) that Paula later married a man named Carson and had a daughter named Hettie. She and her husband were killed in a car accident on the Autobahn, leaving Hettie in Quatermass' care.