Given that nuclear subs were supposed to use the ability to pick up BBC Radio 4 as a signal to determine if London had fallen, I think, no matter how improbable

Given that nuclear subs were supposed to use the ability to pick up BBC Radio 4 as a signal to determine if London had fallen, I think, no matter how improbable, it would at least be prudent to check the MOD didn’t have any alarms set to go off if the BBC website stopped responding on port 80.