Two gentlemen, Jack Worthing and Algernon Moncrieff, have a brilliant plan! To spice up their quiet country life and bring some excitement into it, they invent a person they absolutely must travel to. Jack creates an imaginary brother, Philip, who he uses as an excuse to travel to London to see the lovely Gwendoline. Algernon, on the other hand, has an imaginary friend, Banbury, who is constantly ill and must urgently visit him at his hospital bed. Everything starts to fall apart when Moncrieff starts calling himself Philip after visiting Worthing's young protégé, Cecilia, at her country estate. When the two gentlemen find themselves under the same roof together - it's time to discover how important it is to have Philip!
Unfortunately the movie Jak je důležité míti Filipa is not yet available on Disney Plus.
| Sound | Karel Mareš | Original Music Composer |
| Costume & Make-Up | Květa Holasová | Makeup & Hair |
| Writing | Eva Sadková | Adaptation |
| Camera | Eduard Landisch | Director of Photography |
| Writing | Oscar Wilde | Theatre Play |
| Costume & Make-Up | Jarmila Konečná | Costume Design |
| Camera | Bohuslav Kudláček | Camera Operator |
| Editing | Marie Pačajová | Editor |
| Production | Milan Matuška | Production Manager |
| Sound | Svatava Hrubcová | Sound |
| Camera | Petr Polák | Camera Operator |
| Art | Miloš Ditrich | Set Designer |
| Directing | Kateřina Housková | Assistant Director |
| Costume & Make-Up | Josef Adamička | Makeup & Hair |
| Camera | Miloš Horák | Camera Operator |
| Crew | Jana Dudková | Dramaturgy |
| Directing | Jiří Bělka | Director |