Plans for a sequel to Danny Boyle’s seminal 90s “toilet diving” movie Trainspotting are reportedly underway, but lead actors’ various commitments to American TV series will mean some delays in filming.

Speaking at the Telluride Film Festival in Colorado, USA, this week, Boyle told reporters the movie, dubbed Trainspotting 2, would be his next project.

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The film will follow the lives of hedonists (and drug addicts) played by Ewan McGregor, Jonny Lee Miller, Robert Carlyle and Kevin McKidd.

“All the four main actors want to come back and do it,” Boyle said.

“Now it’s only a matter of getting all their schedules together, which is complicated by two of them doing American TV series.”

McKidd’s character died in Trainspotting and there was no word of what role he would play in the sequel.

Jonny Lee Miller stars in CBS TV series Elementary while Robert Carlyle is a regular on ABC series Once Upon A Time.

Trainspotting was based on the novel by Irvine Welsh, however, Boyle has previously said it wasn’t an adaptation of the book.

It’s unlikely that the next movie will be based on Welsh’s second book in the series, Porno, which is set five years after the original.

“This is much more its own,” Boyle has previously said.

“Irvine will be involved because obviously [these are his characters]. But it’s much more about 20 years having passed. The actors are 20 years older, and probably locked in the same town.

“It’s what happened to them, really, and that’s the point of it.”

Boyle said he was aiming for a 2016 release of the film, which would be exactly 20 years after the original movie was released.