Charles Leedham-Greene (QMUL) Group Theory 1st Sep 1988 to 15th Oct 1988
Arjen Lenstra (Citibank, NY) Comp. number theory 1st Jan 1991 to 15th Feb 1991
Trudy Weibel (ETH Zuerich) Logic 23rd Apr 1991 to 31st Dec 1991
Johannes Graf von Schmettow (Dusseldorf) Comp. group theory 29th Jul 1991 to 30th Oct 1991
Michael Vaughan-Lee (Oxford) Group Theory 1st Aug 1991 to 15th Aug 1991
George Havas (UQ) Comp. group theory 10th Sep 1991
Gerhard Schneider (U. GHS, Essen) Representation Theory 15th Oct 1991 to 15th Mar 1991
George Havas (UQ) Comp. group theory 25th Nov 1991
Sarah Rees (Newcastle, UK) Geometric Topology 14th Dec 1991 to 21st Dec 1991
Eamonn O'Brien (ANU) Comp. group theory 2nd Mar 1992 to 13th Mar 1992
Gary Sherman (Terre Haute) Math. Education 4th Mar 1992 to 6th Mar 1992
Johannes Graf von Schmettow (Dusseldorf) Comp. group theory 1st Aug 1992 to 1st Oct 1992
Klaus Lux (Tuscon) Representation Theory 18th Sep 1992 to 20th Sep 1992
Derek Holt (Warwick) Group Theory 1st Jan 1993 to 28th Feb 1993
George Havas (UQ) Comp. group theory 6th Apr 1993 to 8th Apr 1993
Max Juntgen (TU Berlin) Comp. number theory 15th Mar 1994 to 1st Apr 1994
Pascal Letard (Bordeaux) Comp. number theory 4th Apr 1994 to 15th Jul 1994
Jon Carlson (Georgia, Athens) Representation Theory 17th Apr 1994 to 22nd Apr 1994
Charles Leedham-Greene (QMUL) Group Theory 22nd Aug 1994 to 23rd Sep 1994