Danny Boyle has confirmed he wants to start filming the Trainspotting sequel by 2016 with the original cast and screenwriter.
"This has been a long time coming," he told Indie Wire's The Playlist.
"There's always been this long term plan for Trainspotting 2."
"If [John Hodge] can produce a decent enough script, I don't think there will be any barriers to [Ewan McGregor] or any of the cast coming back," he added.
"I think they'll wanna know that the parts are good so they don't feel like they are letting anyone down."
"The reason for doing it again is that people cherish the original," he explained
Trainspotting made $72 million internationally and has a 89 percent "certified fresh" rating on review aggregator site Rotten Tomatoes. With popularity like that, it's no wonder Danny is being so vigilant.
"People remember it or have caught up with it if they never saw because they were younger. So you want to make sure you don't disappoint people," he explained.
"That will be the only criteria I think."
The film will be very loosely based on Trainspotting author Irvine Welsh's novel Porno which chronicles the lives of the characters 10 years after the first book.
For instance, rather than a focus on heroin use and abuse, Porno focuses instead on the pornography business.
"It's very loosely based on Porno. There's a couple of things that are based on the book, but obviously we'd have to have Irvine on board," Danny explained.
"The ideal time would be Porno in 2016," he said. "Because it was 1996 when Trainspotting came out. 20 years, it's like wow, where did that go."