The townhouse continued its interesting design legacy and history in the mid-20th century to become Christian Dior's London atelier, within which Dior housed his collections. During this time in the 1970s the listed interior was modified by the seminal mid-century architect and leading Pop interior designer and furniture maker Max Clendinning (b. 1924) who designed cupboards, cubicles and display cases for Dior's ready to wear clothes and accessories. To combine the old and new, everything (including the walls, ceilings and woodwork) was painted a uniform mid-grey with a grey velvet Wilton carpet and grey uniformed attendants to “throw the clothes into sharper relief, and seems to conform with the classical, refined elegance of the House of Dior itself.” This austere style of monochromatic design was developed from his seminal 1960s signature white on white designs that marked the peak of British Modernism.