Ewan McGregor
As of now, no official title or release date has been announced for the film (Ewan McGregor)Jason Merritt / Getty

Ewan McGregor has disclosed that he recently read the untitled script of the Trainspotting sequel, just days after director Danny Boyle confirmed that the shooting for the movie will begin in May. The original cast member, who waited for the right script for 20 long years, said the one he received recently was "really, really, really good".

John Hodge's script for the sequel has been adapted from Irvine Welsh's follow-up novel titled Porno. "It's been ten years since Irvine Welsh wrote the sequel novel, Porno, so it's been a long time, a lot of speculation. For me too!" McGregor told Collider. "Ten years ago, I didn't want to do it; I wasn't ready to do it. Also, there was no script," he said.

"The script only arrived very recently, which was really, really, really good. I think, if that had not happened, none of us would be into it," the actor said. "I think we're all sort of somewhat protective of what Trainspotting means to people, and what it means to us. None of us want to make a poor sequel to it. So had we not been presented with the most extraordinary script, which we were, I think we wouldn't be making the sequel. But because we were, we are."

In 2015, Boyle had said McGregor, Jonny Lee Miller, Ewen Bremner and Robert Carlyle will be in the movie sequel. "I think it would be quite an amazing thing to make a sequel to a movie 20 years later, with all the same characters," McGregor previously told Entertainment Weekly.

Released in 1996, Trainspotting deals with four heroin addict friends residing in Edinburgh during the late 1980s who are trying to make it into the world on their own terms, which ultimately leads them to plan a big scam.

As of now, no official title or release date for the film has been announced.