1925: Harley Street is in Marylebone which is in centeral London.  It is known for its large number of medicine and surgery speacialists and those numbers only increased as time went on.  But before that it consisted of a small amount of house, but doctors were drawn to these areas because the houses were spacious enough for them to double as surgery areas and their residences.  It was named after Edward Harley who marreid Henrietta Cavendish Holles, daughter of the Duke of Newcastle. 

Today: This area is managed by the Howard de Walden Estate. There are about 3,000 people who are employed on Harley Street, such as plastic surgeons and paramedics.  Medicine is one of the many reasons that classify Maryledone as a esteemed region to live in London with Prime Central status.  The London Clinic Cancer Care have some of the most cutting- edge radiology equiptmwnt in the world.  Marylebone is one of the most desireable places to live in London.

Link to picture: https://www.google.com/search?q=harley+street+london&safe=active&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjI-572gNHhAhXIwFkKHaQWAiwQ_AUIDygC&biw=722&bih=672#imgrc=Lp2WJH8QZoOgKM:

Sources used: https://en.wikipedia.org/wiki/Harley_Street

https://www.galliardhomes.com/investor-information/investor-guides/guide/the-history-of-harley-street