	The MBW's headquarters were taken over by the London County Council as its headquarters until County Hall was built and occupied in 1922; the building was then renamed 'Old County Hall' and continued as a subsidiary office for the LCC until the original hundred-year lease on the site expired in 1958. It was subsequently used for central government offices and demolished in 1971 to make way for a new headquarters for the British Council. The site is adjacent to Admiralty Arch, off The Mall.