[1] He was supervised by David Howell, and submitted his thesis – Ideology and electoral politics in Labour's rise to major party status 1918-31 – in 1988.

[7][8][9] Also in 1993, co-writing with Richard Kelly, Garner published a textbook entitled British Political Parties Today.

[14][15] 1996 also saw the publication of Animal Rights: The Changing Debate, a collection edited by Garner and published by Palgrave Macmillan.

[24] In 2009, the first edition of his textbook Introduction to Politics, co-authored with Peter Ferdinand and Stephanie Lawson, was published with Oxford University Press.

[30] 2010 saw the publication of The Animal Rights Debate: Abolition or Regulation by Columbia University Press.

While Francione defends an abolitionist approach to animal rights, Garner advocates for a reformist stance.

[36] In this work of political philosophy, Garner defends a novel theory of justice affording rights to animals.

[45] Garner retired from Leicester in 2020 and began an MA in creative writing at the University of East Anglia.