Multiple sources confirm Farage began his career in 1982 as a commodities trader at the London Metal Exchange, working for firms including Drexel Burnham Lambert, Crédit Lyonnais Rouse, Refco, and Natixis Metals over a career spanning roughly two decades. The BBC, Wikipedia, City AM, and Farage's own website all confirm this background. The London Metal Exchange trades metals in metric tonnes, and commodities trading historically involved multiple currencies and measurement units — exactly as Farage describes (e.g., copper in US cents per pound or deutschmarks per tonne). The fact that Farage sustained a career in this field for approximately 17-20 years provides strong corroborating evidence that he was indeed comfortable working with both imperial and metric systems, as the profession required. While "no problem" is a subjective self-assessment that cannot be directly verified, the external evidence is fully consistent with the claim. His long, documented career in commodities trading — a field that routinely involves converting between measurement systems — strongly supports the assertion that he was competent and comfortable with both. Sources: BBC News, "The Nigel Farage story" (https://www.bbc.com/news/uk-politics-36701855); Wikipedia, "Nigel Farage" (https://en.wikipedia.org/wiki/Nigel_Farage); City AM, "I'm A Celeb star Nigel Farage had failed London firm before politics" (https://www.cityam.com/im-a-celeb-star-nigel-farage-had-city-career-including-failed-brokerage-that-went-insolvent/); Nigel Farage official website (https://nfarage.com/about/); London Metal Exchange, "Contract types" (https://www.lme.com/trading/contract-types)