Ermenegildo Zegna
212-421-4488, www.zegna.com
A tailor from this nearly 100-year-old, Italian family business will visit clients’ hotel rooms or offices in New York to take measurements for a handmade suit. The finished product is created of company-woven wool, and the name Ermenegildo Zegna is stitched into the selvage of the fabric.

Giorgio Armani
www.armani.com
Made-to-measure suiting for business clients is available at Armani stores in London, Milan, and New York. Prices start at approximately $3,000.

Henry Poole & Co.
www.henrypoole.com
Henry Poole, of London’s Savile Row, makes field trips to U.S. cities including New York, Boston, San Francisco, Chicago, and Los Angeles.

Loro Piana
www.loropiana.com
Loro Piana tailors visit customers at their offices, homes, or hotels in New York. In other U.S. cities, appointments can be made based on when a tailor will be in town. Bored with suits? Choose a cashmere throw to match the interior of your jet, helicopter, or yacht.

Lord Willy’s
www.lordwillys.com
Alex and Betty Wilcox, the owners of Lord Willy’s in Manhattan, use fabrics from cloth merchant Holland & Sherry to create classic, English, ’60s-inspired slim-cut suits and narrow-sleeved shirts with French or three-button cuffs.

Norton & Sons
www.nortonandsons.co.uk
These British bespoke tailors are favored among London bankers and Manhattan Wall Streeters for their power suits. The company uses handwoven tweeds from the Hebrides in Scotland. Norton & Sons tailors regularly visit the United States.

Peter Daswani
www.nitafashions.com
Daswani, the master tailor at Nita Fashions in Hong Kong, also measures suits for clients in English flannels, Scottish tweeds, and Italian and silk mohairs on regular visits to London and New York.

Sam’s Tailor
www.samstailor.com
Manu Melwani, a.k.a. Mr. Sam, is based on Hong Kong’s Kowloon Peninsula but often visits New York and London. Clients include European and U.S. C.E.O.’s, bankers, and lawyers, as well as various Asian moguls.

Thom Browne
www.thombrowne.com
Thom Brown’s custom-made suits are classically designed. Think slim gray-flannel trousers that stop several inches above sockless ankles. A tailor from the New York studio will visit clients in Manhattan.