A Marxian economist, his research interests focused on issues of unemployment and inequality.

He was a consultant for the National Union of Mineworkers (NUM) and for the International Labour Organisation.

[3] On 22 December 2007, he died of a brain cancer at the Sobell House hospice in Oxford.

[4] In the 1970s and early 1980s Glyn was a member of the Trotskyist Militant tendency in Oxford, writing a pamphlet critiquing the 'Alternative Economic Strategy' of the Tribune group of MPs, Capitalist Crisis or Socialist Plan in 1978.

[5] In 1984 Glyn wrote The Economic Case Against Pit Closures for the National Union of Mineworkers to counter the energy policy of the Thatcher government.