Incorporated Society of London Fashion Designers (also known as IncSoc, Inc Soc and ISFLD) was a membership organisation founded in 1942 to promote the British fashion and textile industry and create luxury couture to sell abroad for the war effort. It aimed to build the relationship between government and fashion industry and represent the interests of London couturiers. The organisation continued after the war and sought to present itself as an alternative to the revived Paris couture industry.