Peter Hadfield (born 1 July 1954) is a British freelance journalist, author,[2] and geologist,[3] who runs the YouTube channel Potholer54,[4] which has over 200,000 subscribers.

[2] His writing has appeared in other publications, such as the BBC News website[11], USA Today, The Guardian,[12] The Independent, The Daily Telegraph,[13] The South China Morning Post and The Lancet.

[2] Hadfield's book, "Sixty Seconds that Will Change the World," about the potential implications of an earthquake in Tokyo, was published by Sidgwick & Jackson in 1991.

[18] In 1995, Hadfield was one of a group of reporters at the Foreign Correspondents' Club of Japan (FCCJ) that interviewed Tatsusaburo Suzuki, a lieutenant colonel in the Imperial Japanese Army (IJA) who had served during World War II as the IJA's liaison to the Japanese nuclear weapons programme, about the activities and progression of Imperial Japan's nuclear programme over the course of the war.

[20] On 13 January 2024, fearing the potential that the FCCJ could one day become defunct, Hadfield uploaded the full interview to his YouTube channel, where he also expressed dismay about what he saw as the time wasted by amateur tabloid reporters who did not understand science and asked Suzuki to explain basic facts about nuclear physics to them, referencing an instance of a tabloid reporter asking Suzuki to explain to him what a neutron was.