100 Parliament Street

Government Offices Great George Street (GOGGS) is a large UK government office building situated in Westminster between Horse Guards Road, Great George Street, Parliament Street, King Charles Street and Parliament Square.

The western end of the building, on Horse Guards Road, is known as 1 Horse Guards Road (1HGR) and is occupied by HM Treasury, UK Export Finance, Government Internal Audit Agency, Office of the Leader of the House of Commons, Office of the Leader of the House of Lords and parts of the Cabinet Office. Major refurbishment of 1HGR added floor space which allowed, in 2002, the entire Treasury staff to be housed within it. This was first time the Treasury was in the same building since 50 years before.

The headquarters of HM Revenue and Customs and the Department for Digital, Culture, Media and Sport occupy the Parliament Street end, referred to as 100 Parliament Street (100PS).

The basement houses the Churchill War Rooms, a branch of the Imperial War Museum.

GOGGS is listed Grade II* on the National Heritage List for England, meaning it is of "exceptional interest and of outstanding importance". It was described by the Victorian Society as an early monument of the Edwardian Baroque Revival.