Despite the large scale of the drill, the organisers have jumped to quell any hysteria caused by the alarming images coming from the exercise.
"We want to ensure the British public that this is a case of being better safe than sorry," police spokesperson Linda Surname told HuffPost UK. "The actual event of Boris Johnson entering Number 10 is incredibly unlikely and we want to be clear that there is no cause for alarm."
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Hundreds of actors in devastating make up were drafted to set the scene at the drill, which hypothesised the possibility of the nation's collapse at the hands of the top Tory.
Ambulance crews have not been involved in the exercise to account for the likelihood of the NHS's disappearance with continued Conservative rule.