(since 2000)

1. ‣ Coloured poset homology, Leicester, May 2009.
   

2. ‣ Coloured poset homology, Durham, March 2009.
   

3. ‣ Coloured poset homology, Manchester, November 2008.
   

4. ‣ Partial symmetry, reflection monoids and Coxeter groups, June 2008: Heriot-Watt
   

5. ‣ Knot invariants: natural and not, December 2007, Newcastle colloquium
   

6. ‣ Knot invariants: natural and not, November 2007, York.
   

7. ‣ Weyl groups, lattices and geometric manifolds, July 2007, Hyperbolic Volume Fribourg, Switzerland
   

8. ‣ Partial mirror symmetry: reflection monoids, June 2007, Maxwell Institute, Edinburgh
   

9. ‣ Partial mirror symmetry, November 2006: Sydney algebra seminar.
   

10. ‣ Coxeter groups and geometric manifolds, October 2006, Institute of Geometry and its Applications, Adelaide.
    

11. ‣ Siegel's Problem, March 2005: Complex Analysis seminar, Cambridge.
    

12. ‣ Siegel's Problem, February 2005, Hyperbolic geometry seminar, Warwick.  
    

13. ‣ Coxeter groups and geometric manifolds, October 2004, Sydney algebra seminar.
    

14. ‣ Coxeter groups and geometric manifolds, August 2004, Discrete Groups and Hyperbolic Manifolds, Aberdeen. (in honour of the retirement of Colin Maclachlan)
    

15. ‣ Coxeter groups and geometric manifolds, July 2004, London Mathematical Society Invited Lecture Series, Southampton.
    

16. ‣ Coxeter groups and geometric manifolds, May 2004, Colloquium and Geometry seminar, Fribourg (Switzerland).
    

17. ‣ Coxeter groups and geometric manifolds, March 2004, Southampton Pure Maths Colloquium.
    

18. ‣ Coxeter groups and geometric manifolds, March 2004, British Postgraduate group theory conference, Warwick.
    

19. ‣ Coxeter groups and geometric manifolds, February 2004, GeNERators II, meeting of the North British geometric group theory seminar, ICMS, Edinburgh.
    

20. ‣ Coxeter groups and geometric manifolds, October 2003, Group Theory seminar, Vanderbilt.
    

21. ‣ Coxeter groups and geometric manifolds, October 2003, Topology seminar, Austin.
    

22. ‣ The Geometry and Topology of Groups, May 2003, Universida Autonama, Madrid.
    

23. ‣ A conjecture of Serre, April 2003, Leeds algebra seminar.
    

24. ‣ A conjecture of Serre, March 2003: Imperial College (London algebra colloquium).
    

25. ‣ Rigidity and Arithmeticity, January-March 2003, Number Theory seminar, York.
    

26. ‣ Images of geometric groups, November 2002: Newcastle Algebra seminar.
    

27. ‣ Images of geometric groups, November 2002: Aberdeen Topology seminar.
    

28. ‣ A conjecture of Serre, September 2002, Conference marking the Anniversary of the birth of V I Borevich, St Petersburg.
    

29. ‣ Images of geometric groups, July 2001, Aspects of finitely generated groups, Trento.
    

30. ‣ Algebraic Geometry over Groups, March 2001, Algebra seminar, Warwick.