Charlotte Street is a street in Fitzrovia, central London. The southern half of the street has many restaurants and cafes, and a lively nightlife; while the northern part of the street is more mixed in character, and includes the large office building of the advertising agency Saatchi & Saatchi, and a University College London student hall of residence, Astor College. The street has a significant residential population living above the ground floor. Two conservation areas are contained within the street: Charlotte Street conservation area (Camden) and Charlotte Street West conservation area (City of Westminster)