Jon Casson was appointed Guardian head of production in 2008. As such, he was responsible for all copy editing for the integrated production of the print papers and website of the Guardian , the Observer and guardian.co.uk. As chief copy editor, Casson was part of the team that helped to launch an enhanced Guardian website, mediaguardian.co.uk (replacing Guardian Unlimited), in September 2000. His was the first staff appointment to the new website.

Listen to Casson describe his position with the Guardian.