Straub was to remain with Warner until her retirement in 1970. One of her most famous early designs for Warner was "Surrey", a textile that featured in the Festival of Britain in 1951 and was used in the Regatta Restaurant. Based on the crystalline structure of afwillite, it was chosen as representative of textiles of the early post-war period. During this era, Warner & Sons was still renowned for its high-quality silks and velvets – weaving the coronation robes for Queen Elizabeth II in 1953, as well as the Queensway Coronation Silk that was hung from the balcony of Westminster Abbey during the coronation ceremony. Warner & Sons also created many designs for the Ministry of Works destined for public spaces such as schools and polytechnics. From 1964, Warner & Sons wove designs created by Straub and Davies for Isabel Tisdall's Tamesa Fabrics. Choosing Warner gave Tamesa the flexibility to create short runs, custom die to design briefs and add special finishes such as protective and fireproof coatings. With a focus on the vibrant commercial market, these designs were championed by influential architects of the time such as Milner Gray and Misha Black and were subsequently to appear on everything from seats on BEA's Trident aircraft to the interiors of the QE2. Weaving ceased at the company's Braintree location in 1971, but under the stewardship of John Tibbitts (Frank Warner's grandson), Warner & Sons oversaw production of high-end chintz for London companies such as Colefax & Fowler and US firms such as Lee Jofa and Brunschwig and Fils. Warner & Sons closed at the end of March 1990. In the years leading up to this, Tibbitts had worked to save a vast archive of fabric samples, paper designs and other documentation. Archivists were employed in 1976 and various educational activities provided access to the archive. After transfers of the Warner & Sons brand and archive holdings to new ownership, and a threat that the collection might be lost, it was saved by £2.7m funding that included support from local and national government, The Art Fund and the Clothworkers' Foundation, enabling it to pass into the ownership of Braintree District Museum Trust. It is now housed in the original mill building in Braintree as the Warner Textile Archive. Designs in the archive span two centuries and, alongside the work of Marianne Straub, Frank Davies and Alec Hunter, it includes work by artists such as Augustus Pugin, William Morris, Walter Crane, Vanessa Bell, Howard Hodgkin, Edward Bawden, Hans Tisdall, Graham Sutherland and Lynton Lamb.