|Led from||Inner City Office Block, present day|
|Led to||Precambrian supereon|
|Who/what went through|| One stepladder|
Dozens of Precambrian Worms
This Anomaly opened up in the server room on a London office block's fifteenth floor. The poisonous Precambrian atmosphere seeped through the Anomaly into the building, along with dozens of Precambrian Worms.
- Though it was never stated that this Anomaly ever closed, it would appear it did at some point shortly after the incursion, as the Anomaly Detection Device did not pick the Anomaly up after the detector's creation.