by Chris Columbus; David Heyman; Steven Kloves; Daniel Radcliffe; Rupert Grint; Emma Watson; Kenneth Branagh; Robbie Coltrane; Alan Rickman; Warwick Davis; Richard Griffiths; Richard Harris; Jason Isaacs; John Cleese; Fiona Shaw; Maggie Smith; Julie Walters; John Williams; J K Rowling; Warner Bros. Pictures (1969- ),; Heyday Films.; 1492 Pictures,; Warner Home Video (Firm),;