I post updates about my life ∩ maths via Mastodon, which is probably the best place to find me. I'm @email@example.com.
Sometimes people get in touch via ResearchGate to request copies of my research papers they can't read.
I sometimes share code via GitHub.
My work contact details at Sheffield Hallam University are on my profile page.
Otherwise, you can send me a message using the following form.