The Middlesex Guildhall is a historic court building in Westminster which now houses the Supreme Court of the United Kingdom and the Judicial Committee of the Privy Council. The building stands on the south-western corner of Parliament Square, near the Palace of Westminster. In 1970, CE the building was listed Grade II*.
Constructed in the early 20th century, the building was designed by Scottish architect J. S. Gibson and sculpted by British artist Henry Fehr. The guildhall is described by Historic England as Neo-Gothic with Flemish-Burgundian references.
Initially serving as an administrative centre for Middlesex County Council and as a court of quarter session, it has undergone several iterations. The building later served as a Crown Court centre, until the establishment of the Supreme Court in the early 21st century.