IRVINE Welsh is plotting a Trainspotting TV prequel about the characters’ teenage years.

The Scots author, 58, is currently in talks to recast the foursome as teenagers for a series based on his 2012 novel Skagboys.

Unknown actors take on the iconic roles of Renton, Sick Boy, Begbie and Spud.

Welsh is discussing ideas with the film’s producer Andrew MacDonald.

He told the Scottish Sun: “Myself and Andrew have been talking about doing it as a TV series and recasting it with younger actors and bringing it all up.

“The dust is kind of still settling. Trainspotting 2 has just opened in the States, so we’re all waiting to see what’s going to happen and then we’ll get together in the summer and see what we want to do.”

The foursome were made famous in the 1996 film by Ewan McGregor, Jonny Lee Miller, Ewen Bremner and Robert Carlyle.

Skagboys, released in 2012, looks at Sick Boy and Renton's descent into heroin addiction in Leith during the early 1980s.

It also introduces young versions of Spud and Begbie.

Trainspotting sequel T2, released in January, catches up with the gang two decades after Renton double-crossed them over a drug deal.