The Spa and Barber at Alfred Dunhill

You may feel a little self-conscious approaching the rather grand Bourdon House, home to luxury brand Alfred Dunhill's flagship store, but a calm, unpretentious welcome makes you feel as though you're a member of an exclusive men's club (which, incidentally, is just what occupies the other half of the building). Step through clouds of cigar smoke on the Cellar Bar patio, up the plush carpeted staircase, and into the cutting room where barber Jay clips, trims and shaves from Tuesday through to Saturday. The room is packed with perfectly picked oddities: old books, anonymous bits of engines, a steel stetson, mini TVs and products from 200-year-old London pharmacists DR Harris. The service is impressive - personable, skilled and versatile - with contemporary styles on offer as much as classic, sober cuts more befitting a Mayfair hedge-fund manager. A spa area offers treatments for men and women if you need the full service, and the Cellar bar does a brilliantly spicy Bloody Mary, delivered to the barber's chair. Haircut, £50; wet shave, from £40.