Trainspotting writer Irvine Welsh teases potential sequel series – and whether iconic roles could be recast

I believe I could convincingly portray various characters from Begbie, the hardened and cynical outsider, to Sick Boy, the lover, Spud, the lovable loser, and even the hapless fool. This is because every character you create has a piece of yourself in them, including the more eccentric ones. All you can truly aspire for is that these unusual aspects of your characters are well-contained within you.