Love the last part. Switch your radio off for now but we'll be on again at some random point in the future so use your designated personal telepathy kit to find out when to turn it back on again so we can tell you your allowed to flush that nasty floater your Dad did away...
It was originally written in 1974 by the BBC when the world was less technologically advanced and less knowledgeable about nuclear war.
At the time when the country was still governed by the "stiff upper lip" ethos that saw us through the war, which explains why it is written in such an bureaucratic manner and thus so hilarious to modern eyes.