De La Rue 1968, but this was rejected by the Monopolies commission as being against the public interest. In 1991 the company's name was changed again – this time to "De La Rue plc". In 1965 De La Rue established a joint venture with the Italian printer and inventor Gualtiero Giori called De La Rue Giori. Based in Switzerland, the company specialized in building banknote printing equipment. The company printed banknotes for the Central Bank of Iran during the 1960s. In 1995, the company acquired Portals Limited which had been listed on the London stock market since 1904. For almost 300 years Portals
Warren De la Rue Warren De la Rue Warren De la Rue (15 January 181519 April 1889) was a British astronomer, chemist, and inventor, most famous for his pioneering work in astronomical photography. He was born in Guernsey, the son of the founder of the large firm of stationers of that name in London, Thomas de la Rue and Jane (née Warren). Having completed his education at the College de Sainte Barbe in Paris, he entered his father's business, but devoted his leisure hours to chemical and electrical researches, and between 1836 and 1848 published several papers on these subjects. In 1840, he enclosed