Westminster City Council v Duke of Westminster was a case between Westminster City Council and the 6th Duke of Westminster (and fellow family trust co-trustees) heard in November 1990. The dispute concerned 532 flats in Page Street, Vincent Street and Regency Street, Pimlico, London. These had been designed by architect Sir Edwin Lutyens and erected between 1928-30 for the 2nd Duke and the other family trustees. In 1937 the trustees leased them (for a peppercorn rent of 1 shilling) to the council on a 999-year lease containing the stipulation that they be used only as "dwellings for the working classes... and no other purpose."