<P> Mr. Banks walks through London to the bank, where he is given a humiliating cashiering, and is dismissed . Looking to the tuppence for words, he blurts out "Supercalifragilisticexpialidocious!", tells one of Uncle Albert's jokes, and happily heads home . Dawes mulls over the joke, but finally "gets" it, and floats up into the air, laughing . </P> <P> The next day, the wind changes, meaning Mary Poppins must leave . A happier Mr. Banks is found at home, having fixed his children's kite, and takes the family out to fly it . In the park, the Banks meet Mr. Dawes Jr, who reveals his father died laughing from the joke, and re-employs Mr. Banks as a junior partner . With her work done, Mary Poppins flies away, with Bert bidding her farewell, telling her not to stay away too long . </P> <Ul> <Li> Julie Andrews as Mary Poppins, a magical and loving woman who descends down from the clouds in response to the Banks children's advertisement for a nanny . She is not only firm in her use of authority but gentle and kind as well, a major departure from the original books, in which the character was strict and pompous . </Li> <Li> Dick Van Dyke as Bert, a cockney jack - of - all - trades and Mary Poppins's closest friend, who is completely accustomed to her magic . Their playful interactions imply that they have known each other for a long time and that this kind of story has repeated itself many times . Bert has at least four jobs throughout the film: a one - man band, a pavement chalk artist, a chimney sweep, and a kite seller . <Ul> <Li> Dick Van Dyke also portrays Mr. Dawes Sr., the old director of the bank where Mr. Banks works . During the film's end titles, "Navckid Keyd", an anagram of Dick Van Dyke, is first credited as playing the role before the letters unscramble to reveal Van Dyke's name . </Li> </Ul> </Li> <Li> David Tomlinson as George Banks, Mary Poppins' employer and father of Jane and Michael . He works at the Dawes Tomes Mousley Grubbs Fidelity Fiduciary Bank in London . He is a driven and disciplined man . </Li> <Li> Glynis Johns as Winifred Banks, the easily distracted wife of George Banks and the mother of Jane and Michael . She is depicted as a member of Emmeline Pankhurst's "Votes for Women" suffragette movement . Mrs. Banks was originally named Cynthia, but this was changed to the more English - sounding Winifred per Travers . </Li> <Li> Hermione Baddeley as Ellen, the maid of the Banks residence . </Li> <Li> Karen Dotrice as Jane Banks . </Li> <Li> Matthew Garber as Michael Banks . </Li> <Li> Elsa Lanchester as Katie Nanna, the disgruntled nanny who quits the Banks family . </Li> <Li> Arthur Treacher as Constable Jones, a police officer . </Li> <Li> Reginald Owen as Admiral Boom, the Banks' eccentric neighbor and a naval officer . He has his first mate, Mr. Binnacle, fire a cannon from his roof every 8 a.m. and 6 p.m. </Li> <Li> Ed Wynn as Uncle Albert, a jolly gentleman who suffers from an unknown condition where he floats in the air during fits of uncontrollable laughter . Although he likes having company over, he becomes very sad and cries when his guests have to leave (he falls back to the ground, since it is the inversion of laughing). </Li> <Li> Reta Shaw as Mrs. Brill, the cook of the Banks residence . </Li> <Li> Don Barclay as Mr. Binnacle, Admiral Boom's first mate . </Li> <Li> Marjorie Bennett as Miss Lark, owner of the dog named Andrew, who frequently runs away . </Li> <Li> Arthur Malet as Mr. Dawes Jr., the director's son and member of the board . </Li> <Li> Jane Darwell as the "Bird Woman," an old woman who sells breadcrumbs for the pigeons on the steps of St Paul's Cathedral . </Li> <Li> Marjorie Eaton as Miss Maya Persimmon . </Li> <Li> Jimmy Logan as a doorman who chases after the children in the bank . </Li> <Li> Alma Lawton as Mrs. Corry, an old shopkeeper of a gingerbread shop and mother of two daughters . </Li> <Li> Betty Lou Gerson as Old Crone (uncredited) </Li> <Li> Kay E. Kuter as Man in Bank (uncredited) </Li> <Li> Doris Lloyd as Depositor (uncredited) </Li> <Li> Queenie Leonard as Depositor (uncredited) </Li> </Ul> <Li> Julie Andrews as Mary Poppins, a magical and loving woman who descends down from the clouds in response to the Banks children's advertisement for a nanny . She is not only firm in her use of authority but gentle and kind as well, a major departure from the original books, in which the character was strict and pompous . </Li>

Who plays the old banker in mary poppins