The story
Founded by Belinda Bellville in 1953.1
Bellville Sassoon was founded in 1953 by Belinda Bellville, who retired in 1981. It became Bellville Sassoon by name in 1970 after David Sassoon, who had joined the company in 1958 and remained for some 50 years. The company is currently run by Irish fashion designer Lorcan Mullany.
Bellville Sassoon actually has its origins in Belinda Bellville's grandmother, Cuckoo Leith, who ran a dress-shop in the 1920s. Belinda Bellville invited David Sassoon to join the firm in 1958.
Due to Sassoon's Jewish roots, Bellville Sassoon has become a notable Jewish fashion house, and according to Sassoon the salon has done "a tremendous amount for weddings and bar mitzvahs, because Jewish women like to dress up for these occasions. They have been very big business for us over the years."
From Wikipedia’s article on Bellville Sassoon, shared under CC BY-SA 4.0.3