As found on a SomethingAwful.com forum thread, and courtesy of YouTube, this is in its entirety, “The War Game”.
“The War Game” is a British mock documentary from 1965 that was never shown on television at the time because it was deemed too horrifying. It describes in loving detail the impact of a nuclear strike on a completely unprepared UK. Since it wasn’t aired until 20 years after its filming, it’s somewhat hard to find, so I suspect for most of you this will be the first time you’ve seen it. More modern films that have followed such as The Day After, Testament, Threads and the recent Children of Men all borrow liberally from this movie, though The War Game is far more intense than any of these. For those of us that grew up in the 70s and 80s, this was our future.
Below the cut, the hour-long “The War Game”, in five parts. You may want to see something lighthearted afterwards. I recommend Shrek.