Straight roads
The Romans were a canny lot, take Ermine Street, its route between London Bridge and Liverpool Street stations (not that either existed) is almost a straight line of less than a mile. Now the City Fathers have designated the route thus:
L/By London Bridge Street
L Borough High Street
R Southwark Street
R & L Thrale Street
R Southwark Bridge Road
F Southwark Bridge
R Upper Thames Street
Forward Byward Street
L Minories
B/L Mansell Street
R Whitechapel High Street
L Osborn Street
F Brick Lane
L Bethnal Green Road
L Shoreditch High Street
F Bishopsgate
Liverpool Street Station on right, which means passengers having to cross a busy road to enter the station. Please cabbies tell me I’m wrong with this route.
Johnson’s London Dictionary: Zone 6
ZONE 6 (n.) Hinterland devoid of Hansom cabs and drivers doth willing, by carriage, to transport gentlemen to those lands.
Dr. Johnson’s London Dictionary for publick consumption in the twenty-first century avail yourself on Twitter @JohnsonsLondon
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London in Quotations: William Morris

Forget six counties overhung with smoke, / Forget the snorting and piston stroke, / Forget the spreading of the hideous town; / Think rather of the pack-horse on the down, / And dream of London, small, and white, and clean.

William Morris (1834-1896)