In 1965, David Phillips, the China &amp; Glass buyer Woollands of Knightsbridge - the London department store - held a British Fortnight promotion and commissioned designs from Clark and other designers from the era. This led to Clark's iconic Union Jack mug for which he is most well known. For the opening reception he devised a novelty handout called 'Instant Patriot Outfit'. This was a small gold foil folder with a folded Union Jack inside it, with the slogan 'Be British' printed on it. It was subsequently given to guests at the opening event of the British Pavilion at the 1967 Worlds Fair in Montreal. Woollands closed in 1967 and David Phillips went on to become Terence Conran's chief buyer at Habitat