[1] Born at Lowestoft, Suffolk, son of company director George Barker and Gertrude (née Seeley), Barker and his mother escaped the heavy bombing of Lowestoft during the Second World War in favour of a cottage at Beaconsfield, Buckinghamshire; he would attend six schools over the next six years.
On leaving school he went into local and regional journalism, first as a reporter and subeditor for the Suffolk Chronicle and Mercury in Ipswich, then the East Anglian Daily Times and its counterpart the Ipswich Evening Star, where he wrote features and served as theatre critic.
He subsequently moved to the Express and Star in Wolverhampton, again as reporter and theatre critic, only remaining in the latter role until being banned from local theatres because of critical reviews he had written.
From 1963, Barker spent much of his career at The Guardian, as a reporter and feature writer.
[1] In 1986, aged 57, Barker married Guardian colleague Sarah Alwyn.