Current PhD students: Harry Petyt (Bristol).
Past PhD students: Bruno Robbio (University of the Basque Country, co-supervised with Ilya Kazachkov).
Lectures (2021/22): Algebraic Topology -- all the stuff is on Blackboard.
Third/fourth-year projects: Bristol students interested in doing their project with me should contact me at mh17540 @ bristol . ac . uk. To give you an idea of topics, recent projects have been on Coxeter groups, crystallographic groups, free group automorphisms, Stallings' theorem on ends, and Hydra groups.
Reference letters: In general, I am happy to write a reference letter if you have taken a class/done a project with me. Here is information about what I need to do it.