David Marsh is the Production Editor of the Guardian. Follow his hugely popular Twitter tips @guardianstyle., David Marsh is the production editor of the Guardian, which he joined in 1996. He edits the newspaper’s style guide and Mind Your Language blog. He learned about grammar and spelling at Poynton County Primary School, Cheshire, and later attended King’s School, Macclesfield, Sheffield University, and University College London. He started his career at the Kent Messenger Group and edited the Redditch Indicator and Bromley & Bexley Leader (both, sadly, defunct) before joining the Independent (which is still going). He also worked for the Financial Times – the result, he believes, of mistaken identity. He lives in Berkshire.