It’s 9am in Claridge’s spa, a subterranean enclave of zen with bonsai trees and white bouclé-wool sofas. Nils Frahm drifts out of the speaker as I lie on a fluffy peach bed. Ross J Barr sticks a stainless-steel needle an inch below my belly button, and my stomach immediately gurgles. “Hear that? That’s your qi,” he says. “It still makes me laugh how many people think I say ‘cheese’ when I say ‘qi’.”
Barr, 46, is one of London’s most in-demand acupuncturists with a…

