Nativity!

Nativity! is a 2009 British Christmas musical comedy film directed by Debbie Isitt and released on 27 November 2009 and the first instalment in the Nativity film series. The film stars Martin Freeman and Ashley Jensen. In the film, teacher Paul Maddens (Freeman) lies to his rival that Hollywood are coming to watch his school's Christmas nativity, but after the lie gets out of hand, he must resolve the issue and save his school fast. The film was written by its director, Debbie Isitt, but was also partially improvised.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.