- Derek Holt (Warwick)
- Group Theory
- 1st Jan 1993 to 28th Feb 1993
- 18th Oct 1995 to 29th Nov 1995
- 20th Mar 1998 to 17th Apr 1998
- 22nd Oct 1999 to 17th Dec 1999
- 19th Oct 2002 to 13th Dec 2002
- 19th Mar 2005 to 16th Apr 2005
- 3rd Jan 2007 to 17th Mar 2007
- 3rd Oct 2009 to 5th Dec 2009
- 12th Jan 2012 to 10th Mar 2012
- 28th Sep 2014 to 3rd Dec 2014
- 23rd Jan 2017 to 10th Apr 2017
- 14th Mar 2019 to 17th Apr 2019
