Founder: Thomas Hawkes and James Watson Gieves
Year Founded: 1717 (as Hawkes & Co.)

There are a number of Savile Row tailors on our list. We've chosen Gieves & Hawkes because they are both an important pioneering tailor and an important international brand. The house was founded at the beginning of the 18th Century, and gained its first Royal Warrant at the beginning of the 19th. They've made clothes for everyone from George III to Michael Jackson. Visit their headquarters at 1 Savile Row and you'll see Jackson's military-influenced uniforms along with the military uniforms that inspired them. Hawkes was one of the the first British tailors to sell ready-to-wear (which was then called "Immediate Wear"), and today it's the bulk of the brand's business.