Northwood Hills

It's a trek all the way to Harrow to see Raj Bhachu at his practice, Sai Nutrition, but there are converts, including cookbook authors and spiralizing advocates Melissa and Jasmine Hemsley, who are willing to make the trip. Bhachu practices integrative medicine, meaning that he tests for parasites, heavy-metal toxicity, and everything else conventional MDs might not immediately (or ever) jump to. So if you have a health issue that you can't get to the bottom of, a trip to the outskirts of London may be in the cards.