Imelda Staunton, Stephen Campbell Moore, Simon Jones, David Haig and Tuppence Middleton have been added to the ensemble of the Downton Abbey movie, the film's production companies said.

ADVERTISEMENT reported Kate Phillips and Geraldine James will also appear in the film follow-up to the early 20th century-set, British costume drama, which wrapped in 2015 after six seasons.

Abbey icons Michelle Dockery, Elizabeth McGovern, Maggie Smith, Joanne Froggatt, Jim Carter, Allen Leech and Hugh Bonneville have all signed on to reprise their roles in the sequel.

Series creator Julian Fellowes wrote the film's screenplay and is producing the project.

"We are excited that photography is about to start on the long-awaited film and that the beloved main characters will be joined by such exceptional actors playing new roles unique to the movie," said Gareth Neame, Carnival Films' executive chairman, Thursday. reported Brian Percival was originally announced as the movie's director, but he has since been replaced by Michael Engler.

No reason was given for Percival's move from director to executive producer.

Staunton has connections to several of the cast members.

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She is married to Carter, her "Shakespeare in Love" and "Cranford" co-star; acted in the "Harry Potter" franchise with Smith; and in the "Paddington" movies with Bonneville.

The "Downton Abbey" film was announced in July.

Photo credit: Downton Abbey/ITV