National Magazine Company (or Nat Mags) is a British magazine publisher based in London. It was established in 1910 by William Randolph Hearst and was a wholly owned subsidiary of the Hearst Corporation. Arnaud de Puyfontaine became chief executive of Nat Mags in 2009. His predecessor Duncan Edwards had been at the company since around 1990 and was previously managing director. In 2008 The Guardian newspaper named Duncan Edwards the 75th most important person in the British media. Nat Mags merged with Hachette Filipacchi Médias UK in 2011 to form Hearst Magazines UK.