Mark's principal research interests and expertise lie in the field of criminal law, criminology and criminal justice. More specifically, Mark researches the causes and effects of hate crime, the philosophy underpinning hate crime legislation and the use of alternative criminal justice interventions for hate-motivated offences. His monograph Hate Crime and Restorative Justice: Exploring Causes, Repairing Harms was published by OUP in 2014. Mark is also co-author (along with Keating, Kyd Cunnigham, & Elliot) of the 8th edition of the criminal law text: Clarkson and Keating Criminal Law: Text and Materials published by Sweet & Maxwell. 

Full text versions of most of his publications can be found here.

Mark is currently working on the following research projects:

PhD applicants are welcomed for supervision in the areas of hate crime and/or restorative justice. He is also interested in supervising in the broader areas of criminal justice studies including: the philosophy of punishment, sentencing purposes, criminal law, especially sexual offences, as well as the criminological theories of strain and self-control.