In the sub-basement of the building, the area known as "The Dock" was the home of many of the lower-ranking workers in the Cabinet War Rooms who did not want to or could not go home after a long day's work. However, overheating, low ceilings, and a lack or flush toilets, among other things, persuaded many to risk returning to their homes among the air raids.
For those who did stay inside, they often could become isolated from the outside world. Working most of the day in the underground bunker, workers were sometimes surprised when they discovered that day had become night, a sunny day a rainstorm, and a quiet afternoon an air raid.
