2010

**From magic squares to Sudoku**, Prof Peter J. Cameron, Queen Mary, University of London2009

**The distribution of the primes**, Professor Jon Keating FRS, University of Bristol2008

**What could be simpler than an arithmetic progression?**Professor Timothy Gowers FRS, University of Cambridge2007

**e****,***i*,*π***and all that**, Professor Chris Budd, University of Bath2006

**Big bang - the history of the universe in 60 minutes**, Mr Simon Singh, Science Writer & Journalist**2005**

**Relativity and Geometry**, Professor N. David Mermin, Cornell University

2004

**The Music of the Primes**, Professor Marcus du Sautoy, University of Oxford2003

**Four Colours Suffice**, Dr Robin Wilson, The Open University2002

**Quantum Teleportation**, Professor Samuel L. Braunstein, University of Wales2001

**Threatening Pythagoras with the square root of 2**, Professor Wilfrid Hodges, Queen Mary and Westfield College2000

**Big Money Auctions**, Professor Ken Binmore, UCL1999

**Mathematics is Alive**, Professor Henry Beker, Baltimore Technologies1998

**Some of my Best Friends are Positive Integers**, Professor Adam McBride, University of Strathclyde1997

**The Complexity of Knot Invariants**, Professor Dominic Welsh, University of Oxford1996 Professor Frank Leppington, Imperial College

1995

**Mathematics and the City**, Professor J. Rutherford, the Open University1994 Professor Fred Piper, RHUL

1993

**Error Correcting Codes**, Dr Ray Hill, University of Salford1992

**The Tail of Pi**, Dr Roger Webster, University of Sheffield1991

**Applied Mathematics and Acoustics**, Professor D. G. Crighton, University of Cambridge1990

**Graph theory - past, present and future**, Dr R. J. Wilson, The Open University1989

**The Nature of Problems and the Analysis of Cognitive Maps**, Professor Colin Eden, University of Strathclyde1988

**The Number of values of a function**, Dr Peter Neumann1987 Professor P. Burke FRS