The Cannon Street area sits in the heart of the City of London, and like much of the Square Mile, its restaurants exist primarily to serve the working week - meaning quality is taken seriously and prices reflect it. The options here are aimed squarely at the finance and professional crowd that fills the offices around Cannon Street station and the nearby wharves. It's not a destination for evening leisure, but for a proper business lunch or a well-executed dinner before catching a train, the standard is reliably high.