Although neither a listed building nor on the London Regional Inventory, this is an early 19th-century pub in a charming mews street with an unusual split-level interior. Much of the fittings are said to be imported but the pub retains an olde worlde feel.

The Nag's Head featured on the Evening Crawl of Belgravia in September 2002, the Cavaliers and Grenadiers; Evening Crawl of Knightsbridge and Belgravia in August 2009, and the Mews and Booze: Evening Crawl of Belgravia and Knightsbridge in September 2012.