Dr Mark Oldfield is an independent researcher. Receive updates on our work Mark Oldfield Position External contributor Related Content Mark OldfieldDr Mark Oldfield is an independent researcher Probation Resources, Staffing and Workloads 2001-2008 Revised edition A revised version of a report first published in 20081 February 2010 Young people, knives and guns (summary)A summary report based on detailed research carried out in 2009 17 September 2009 Young people, knives and guns A comprehensive review of gun and knife crime strategies 10 June 2009