One of the scariest British films ever made is now streaming for free

It has a perfect Rotten Tomatoes score

Fear can be induced in many different ways, from psychological thrillers to gory horrors, humans are pretty easily scared.

However, real fear, the kind that lasts with a generation emerges from story-telling based on a scenario that is not only plausible, but has almost seemed likely down the decades.

This is the kind of soul-chilling film that portrays a reality that can only be described as the worst possible outcome for humanity, and the film is called Threads.

A British and Australian film made by the BBC, Nine Network and Western World Television, the movie depicts the horrors of what an all out nuclear war would do to the UK and its devastating consequences.

First airing in September 1984, the film has only been broadcast a handful of times since then, but returned to screens this week when it was shown on BBC 4 to celebrate its 40 year anniversary.

This means it is now available to stream at home on BBC iPlayer.

Threads sits in an exclusive club of films to have 100% score on Rotten Tomatoes and 8/10 on IMDb and is an enthralling rollercoaster of emotions that you just cannot look away from.

While the film concerns an all out nuclear war, it follows specifically one family in Sheffield who are victims of a bomb intending to destroy the steel industry.

A peak into an alternate reality, the dystopian film is a pretty harrowing watch that leaves nothing to the imagination over just how horrific a nuclear apocalypse would be.

Many took to social media to recall their own experiences of watching the film for the first time, warning first-time viewers that it will likely have a big impact on them.

One user said: “Watching Threads as a youngster (too young really) was a massively transformative experience for me. If you haven’t watched it, you owe it to yourself to do so.”

Another said: "Probably the thing that terrified me most as a child (even more than “Watership Down”) because it was about something that could really happen…"

A third labelled it "potentially one of the greatest, grittiest cult classic films EVER made."

Someone else said: "A brave and realistic portrayal of a limited nuclear strike on Britain, as a drama documentary, also probably the scariest film ever made."