Frank Newby designed building in the 1958 Brussels Expo '58 (the first major World Expo registered under the Bureau International des Expositions (BIE) after World War II) and  designed the American Embassy in London in 1960.
He had designed the British buildings in the 1958 Brussels Expo '58, and this had helped him establish a reputation for being one of the most creative engineers working at the time. In 1960 he was appointed to design the American Embassy in London with Eero Saarinen, whom he met in the United States, and in 1965 to design a new Aviary for Regent's Park Zoo, with Cedric Price and Lord Snowdon. It was the first major World Expo registered under the Bureau International des Expositions (BIE) after World War II. 
