Many of the slaughterhouses around Whitechapel and Aldgate were below ground and terrified herds of beasts would be a regular sight as they were driven through the dung-slicked streets that were already swarming with horse traffic, handcarts and pedestrians.
O’Neill, Gilda. The Good Old Days: Poverty, Crime and Terror in Victorian London (p. 13). Endeavour Press. Kindle Edition.