 He has spoken at public meetings including events organised by the Institute of Ideas, the New York Salon and WORLDwrite.In Europe, he has appeared on BBC Radio 2, BBC Radio 4, BBC Radio 5 Live, BBC News 24, Bloomberg TV, CNBC, CNN and Sky News.In America, he was a guest on the "Al Franken Show" on Air America Radio and he has appeared on the "Counterpoint" programme on Australia's ABC Radio National.