This map plots the settings and references in The French Lieutenant's Woman

To start exploring, click a red pin

Page 33. " Half Harley Street "

Harley Street is a street in London famed since the 19th century for its large number of medical specialists.  The doctors found on Harley Street tend to be those consulted by the fashionable and wealthy.  In 1860, 20 doctors are recorded as having offices on the street, rising to 80 by 1900 (source).