A hooded figure stands at the edge of a pond. Children play nearby. The figure narrates their deaths in advance, calmly, as though reading a weather forecast. Donald Pleasence provides the voice — that dry, unhurried register he perfected across decades of playing men who have seen too much. "I'll be back," the figure promises as the credits roll. "Back... back... back." This aired during children's television. Between cartoons.

The Central Office of Information produced public information films in Britain from 1946 until its closure in 2011, but the early 1970s were the golden age of civic terror. The COI's remit was simple: warn the public about hazards. Drowning, electricity, railway lines, building sites, farm machinery. The approach they chose was less simple. Rather than gentle instruction, the films opted for a kind of controlled psychological violence — measured, institutional, and deeply unsettling. The philosophy appeared to be that a traumatised child was a safe child.

Lonely Water from 1973 remains the most discussed, but it wasn't unusual. Director John Krish earned the nickname "Doctor Death" for his COI work. His 1971 film The Sewing Machine built tension through a ticking clock and the certainty of a child's injury, revealed from the opening frame. Fireworks: Eyes, made in 1974, staged children standing motionless with their backs to the camera, gazing toward a setting sun in compositions borrowed from folk horror, before delivering its conclusion about what fireworks do to faces. These weren't afterthoughts. They were carefully constructed pieces of filmmaking that happened to be about not touching electrical substations.

The most notorious is probably Apaches, directed by John Mackenzie in 1977. Twenty-seven minutes long. Six children play cowboys on a working farm. One by one, they die — crushed by a tractor, drowned in a slurry pit, poisoned by pesticide. The film was commissioned by the Health and Safety Executive to address the roughly thirty annual child deaths on British farms, and it broke all COI booking records. Schools screened it for years. Reports of nightmares and distress among viewers were widespread and apparently considered acceptable collateral.

What makes these films linger isn't the content alone. It's the tone. The pacing is slow. The framing is static. Sound design is sparse — sometimes just wind, or the ambient hum of a field. There's no reassuring music to signal that everything will be fine. The institutional coldness that defined so much British public messaging in this period reaches its purest expression here. The narrator doesn't care about you. The camera doesn't flinch. The government is telling you, flatly, that the world will kill your children if you let it, and it's doing so in the same register it uses to announce postal rate changes.

I watched several of these again recently on the BFI Player, which hosts a free archive. They still work. Not as nostalgia, but as genuinely unnerving short films. The analogue grain, the muted colour palettes, the absence of anything reassuring in the frame — it all compounds into something that feels closer to arthouse horror than public service broadcasting. The Fatal Floor from 1974 sets up a grandmother preparing her home for a newborn and then deploys a punchline so disproportionate it almost qualifies as dark comedy.

Modern safety campaigns use empathy, relatability, bright graphics, social media integration. They want you to feel supported. The COI films of the early 1970s wanted you to feel afraid. Whether that was more effective is genuinely debatable, but it certainly produced a generation of adults who still flinch when they see an unattended body of water on a grey afternoon.

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