The pair were prolific, working on designs for textiles, homewares, fashion for brands such as Liberty and Habitat alongside licensing agreements with brands in America. Neither were formally trained: Collier started out by assisting textile designer Pat Albeck and joined Liberty as a design and colour consultant in 1971. Campbell, eight years her junior, shared her gift for drawing and was asked to help out; she has been working freelance ever since. “All I’ve done all my life is paint patterns, and I have never had a proper job inside an institution or anything like that,” she says.