Brad Pitt has revealed he hopes to make a ''couple'' of sequels to his blockbuster World War Z.

The 49-year-old actor wants his new post-apocalyptic thriller, which is based on Max Brooks' 2006 novel of the same name, to be the first movie in a franchise.

When asked about a potential sequel at the film's world premiere at the Empire Cinema in London's Leicester Square on Sunday (02.06.13), he told BANG Showbiz: ''I think it lends itself to a couple of them. We've certainly got enough to mine from the book and enough to pick up, certainly, if this thing works.''

Pitt further explained that the film is "intense" adding: ''These films have got to be fun. I'm just so thrilled with what I think we've achieved here, because we've really taken a genre and bent it, made it original, and we do not let up. It is so intense.''

Angelina Jolie made her first public appearance since double-mastectomy news supporting Brad Pitt at the World War Z premiere.