Capitalized "the City" often means the City of London, the historic financial district. It is shorthand for the UK finance industry, its banks, markets, and regulators.
The chief function of the city is to convert power into form, energy into culture, dead matter into the living symbols of art, biological reproduction into social creativity. Lewis Mumford
Moral habits, induced by public practices, are far quicker in making their way into men's private lives, than the failings and faults of individuals are in infecting the city at large. Plutarch
The British have been particularly shy about the issues of financial regulation, and attentive only to the interests of the City - hence their reluctance to see the introduction of a tax on financial transactions and tax harmonisation in Europe. François Hollande
If you enter the city of the blind, cover your eyes. Persian Proverb
You can close the city gates but not the mouths of men. Persian Proverb
If every man would sweep before his own door, the city would soon be clean. Italian Proverb