Green’s Dictionary of Slang

Whitechapel in East London; by ext. coarse or vulgar language.

1909

J. Ware Passing Eng. of the Victorian Era 18/2: Banker Chapel Ho (E. London). Whitechapel, and, in another shape, vulgar language [...] ‘Now, Ned, there’s a good feller, none o’ your Banker Chapel Ho!’.