The Harley Street area also enjoys a long-standing reputation as a centre of private medical excellence. This reputation is not fortuitous but is the result of a long tradition, which is jealously guarded by those who work in this medical precinct.

The private healthcare market centred around Harley Street is now worth some £300 million per annum to the UK economy, ignoring the additional spending by patients and their families who travel for treatment to the Harley Street area from all over the world is taken into account. Over 3,000 people are employed by the medical, dental and support facilities in the Harley Street area.