- Directory - News > Mediahttp://www.resourcedungeon.com/directory/news/media/Resource Dungeon - News and Directory Guardian Media Group plchttp://www.gmgplc.co.ukGuardian Media Group plc is a UK multi-media organisation. Publishing and printing provide our core business but recent investments have taken the group into radio and electronic publishing.Fri, 22 Dec 2006 17:23:52 GMT