Pimlico is an area of Central London in the City of Westminster, built as a southern extension to neighbouring Belgravia. It is known for its garden squares and distinctive Regency architecture. Pimlico is demarcated to the north by Victoria Station, by the River Thames to the south, Vauxhall Bridge Road to the east and the former Grosvenor Canal to the west. At its heart is a grid of residential streets laid down by the planner Thomas Cubitt, beginning in 1825 and now protected as the Pimlico Conservation Area. The most prestigious are those on garden squares, with buildings decreasing in grandeur away from St George's Square, Warwick Square, Eccleston Square and the main thoroughfares of Belgrave Road and St. George's Drive. Additions have included the pre–World War II Dolphin Square and the Churchill Gardens and Lillington and Longmoore Gardens estates, now conservation areas in their own right. The area has over 350 Grade II listed buildings and several Grade II* listed churches. At the western edge of Pimlico, on the borders of Chelsea, Pimlico Road has become known in recent years for its interiors and design stores.

Regency architecture encompasses classical buildings built in the United Kingdom during the Regency era in the early 19th century when George IV was Prince Regent, and also to earlier and later buildings following the same style. The period coincides with the Biedermeier style in the German-speaking lands, Federal style in the United States and the French Empire style. Regency style is also applied to interior design and decorative arts of the period, typified by elegant furniture and vertically striped wallpaper, and to styles of clothing; for men, as typified by the dandy Beau Brummell and for women the Empire silhouette.