Scottish writer, born in Edinburgh, generally seen as the first and most important member of the so‐called ‘chemical generation’ of younger British (mainly Scottish) writers, politically disaffected, culturally sophisticated, and centrally engaged with the music, drugs, and the mores of 1990s club culture. After leaving school at 16, Welsh did many jobs in Edinburgh and London, before taking an MBA in 1990. His first novel, Trainspotting (1993), about a group of young heroin addicts in 1980s Edinburgh, was sexually and scatologically explicit, written in a pungent Edinburgh vernacular, and distinguished by great comic verve. It quickly became a best‐seller and cultural byword; a stage version was followed by a film adaptation (1996). Its characters reappear in Porno (2002). Other works of fiction include the short‐story collections, The Acid House (1994) and Ecstasy: Three Tales of Chemical Romance (1996); and the novels, Marabou Stork Nightmares (1995), Filth (1998), Glue (2001), and The Bedroom Secrets of Master Chefs (2006).