The most reliable way to contact me is by email to....
....preferably from an academic address. The university has strong (and occasionally overzealous) spam filtering, so if you don't get a reply please consider the possibility that your message didn't reach me. Manchester students should always use their university email account when contacting staff.
For Manchester students, the best way to contact me during termtime is usually to come to my office hour. In Semester One of 2023-24 my office hour will be moving around due to other commitments; students on the courses I am lecturing should check the Blackboard page for this week's time, while others should email me to enquire.
Please note that I don't supervise internships and I cannot respond to generic requests for PhD or postdoctoral supervision which look like they have been mass-mailed; I am very happy to receive personalised mail from people with a specific interest in working with me.
I am an editor of the International Journal of Algebra and Computation and am happy to receive submissions in or near my areas of interest. Before submitting please make sure your paper is carefully proofread and within the journal scope. Papers which are carelessly prepared and/or inappropriate for the journal will be rejected, however brilliant the mathematics!
I'm always happy to talk to researchers with similar (or complementary!) interests, so feel free to drop me a line and suggest a visit to Manchester. If your research is likely to be of broad interest to people here then I may also be able to arrange an invitation to give a seminar talk. I have a page of useful information for visitors to Manchester.