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