John Barker was born in London in 1948. In 1972 he was convicted of conspiring to cause explosions in what was called the Angry Brigade trial. He served a ten-year prison sentence and is the author of Bending the Bars, a memoir of his prison time and a crime novel called Futures. He worked as a dustman and welder before being implicated in a conspiracy to import cannabis in 1986. In 1990 he was finally arrested and served a five-year sentence. Since then he has worked as writer and book indexer. For further biographical details see 2014 article in The Guardian based on an interview with John Barker.