Guardian News & Media (GNM) is adding the new post of multimedia head and has given the role to current guardian.co.uk network head Tom Happold. It’s a move GNM digital director Emily Bell (via Guardian.co.uk) said signals “our growing commitment to and investment in multimedia”; Matt Wells is already audio head. Happold joined the site in 2003 and has been news and politics. Disclaimer: ContentNext is a wholly owned subsidiary of GNM.