Ian Britain arrived in Australia as a child in late 1950. Growing up in Melbourne, he attended Armadale Primary School and Trinity Grammar, then completed a BA at the Australian National University. Pursuing his interest in historical and literary topics, Britain completed an MA on George Bernard Shaw at Monash University (1975) and a PhD on Fabianism at Oxford University (1979).
After a period as lecturer in history at Oxford, he returned to Australia to take up a lectureship in the history department at Melbourne University. When this position was made redundant in 1990, he worked as a freelance writer and journalist, publishing, among many articles and reviews, Once an Australian: Journeys with Barry Humphries, Clive James, Germaine Greer and Robert Hughes (1997). With Brenda Niall and Pamela Williams, he edited the Oxford Book of Australian Schooldays (1997).
Britain was a founding editor of the Melbourne magazine Webber's and was a guest editor of Island. In 2001, he continued his experience with magazines, becoming the seventh editor of Meanjin.