magazines from the Lisbon Public Library, and newsreel reports he saw in cinemascreated seemingly credible reports that appeared to come from London. During his time in Portugal, he stayed in Estoril, at the Hotel Palácio. He claimed to be travelling around Britain and submitted his travel expenses based on fares listed in a British railway guide. Pujol's unfamiliarity with the non-decimal system of currency used in Britain at the time was a slight difficulty. At this time Great Britain's unit of currency, the pound sterling, was subdivided into 20 shillings, each having twelve pence. Pujol was unable to total his expenses in this complex system, so simply itemised them, and said that he would send the total later. During this time he created an extensive network of fictitious sub-agents living in different parts of Britain. Because he had never actually visited the UK, he made several mistakes, such as claiming that his alleged contact in Glasgow "would do anything for a litre of wine", unaware of Scottish drinking habits or that the UK did not use the metric system. His reports were intercepted by the British Ultra communications interceptions programme, and seemed so credible that the British counter-intelligence service MI5 launched a full-scale spy hunt. In February 1942, either he or his wife (accounts differ) approached the United States after it had entered the war, contacting U.S. Navy Lieutenant Patrick Demorest in the naval attache's office in Lisbon, who recognised Pujol's potential. Demorest contacted his British counterparts. Work with MI5 The British had become aware that someone had been misinforming the Germans, and realised the value of this after the wasted resources attempting to hunt down a non-existent convoy reported to them by Pujol. He was moved to Britain on 24 April 1942 and given the code name "Bovril", after the drink concentrate. However, after he passed the security check conducted by MI6 Officer Desmond Bristow, Bristow suggested that he be accompanied by MI5 officer Tomás Harris (a fluent Spanish speaker) to brief Pujol on how he and Harris should work together. Pujol's wife and child were later moved to Britain. Pujol operated as a double agent under the XX Committee's aegis; Cyril Mills was initially Bovril's case officer; but he spoke no Spanish and quickly dropped out of the picture. His main contribution was to suggest, after the truly extraordinary dimensions of Pujol's imagination and accomplishments had become apparent,