The development of their styles can be traced in Lesley Jackson's book Robin and Lucienne Day: Pioneers in Modern Design, published in 2001.
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A few years after the Fat Tulips broke up in the mid-1990s, he started a dealership in art and antiques with his wife, Tully, focusing on work from the 1960s and 1970s, including John Piper, Stig Lindberg, Lucienne Day and John Clappison.
The Festival Hall project was led by London County Council’s chief architect, Robert Matthew, who gathered around him a young team of talented designers including Leslie Martin, who was eventually to lead the project with Edwin Williams and Peter Moro, along with the furniture designer Robin Day and his wife, the textile designer Lucienne Day.