Brad Pitt reckons there will be “many” sequels to his zombie apocalypse movie World War Z.

The 49-year-old actor, who stars in and produced World War Z, has spoken about his hopes for additional instalments of the zombie flick, as he believes there is still plenty more material to use from the book on which the film is based.

Pitt said: ''It's set up for many sequels because the book is so dense with information and historical references, and it's an international story".

''There are so many things we could do with this - if it works. But we need this one to work - which we think it does.''

He added: ''I'm so fond of this film, because there are many interpretations that start arising".

''And I love that it starts that kind of dialogue, but more than anything, it's just the most intense thing you're going to see all summer.''