The first feature film based on the BBC’s longest running animated series Postman Pat is set for a 3D release in UK theaters on Friday, May 24, 2013.

Postman Pat: The Movie, which is currently in production and backed by Icon Film Distribution, Lionsgate UK, Classic Media and RGH Entertainment, will focus on main character Pat (Stephen Mangan) who becomes tempted by money, fame and a shiny new uniform after entering a national TV talent show.

Mike Disa (Hoodwinked Too! Hood vs. Evil) is on board as director and popular Harry Potter actor Rupert Grint and David Tennant (Doctor Who, Harry Potter) will also lend their voice talents to the film.

Annika Bluhm, the producer of the hit Postman Pat series, co-wrote the screenplay with Kim Fuller (Spice World).

RGH’s Robert Anich and Miles Horst, Classic Media’s Ceri Barnes and Annika Bluhm will produce, with RGH Entertainment’s Randa Ayoubi and David Corbett and Classic Media’s Eric Ellenbogen and Doug Schwalbe as executive producers.

The movie release further expands the IP which already encompasses toys, plush, and apps.

Postman Pat the series airs on CBeebies in the UK and on other networks in more than 80 territories worldwide.