The ‘Bow Bells’ thing is nonsense. Cockeyism (I think I made that word up) is a culture that spans the whole of east London extending from Aldgate, which borders the City of London to East Ham (part of the borough of Newham) which borders Essex. There has always been an immigrant population, most notably Irish who worked in the building industry, Chinese who opened restaurants in Limehouse, and Jews who, among their other business enterprises, ran clothing companies in Stepney, now part of the borough of Tower Hamlets, and plied their trade in the world famous ‘Petticoat Lane’ market - all of whom lived and worked, in the main, peaceably side by side with the indigenous population.
However, with the increasing influx of other nationalities and cultures the area deteriorated; education, the availability of social housing, and other essential services suffered and for the indigenous population the area became increasingly unrecognisable. SP is quite right in saying that those who were able to move out to greener pastures did, many of them to Essex.
Jackdaw, //Where does the West End finish and the East End start?//
The City of London separates the East End from the West End.