Privacy
Last updated 23 October 2026
Who is responsible
This website belongs to Dr John T Hann, based in Cambridge, UK. You can reach him on LinkedIn.
What this site collects
Nothing directly. There are no forms, no accounts, no analytics and no cookies on this site.
Like every website, the server that hosts it and the network that delivers it (Cloudflare) record basic technical information about each request, such as your IP address, browser and the page asked for. This is used only to deliver the site and keep it secure, and is not used to identify you.
If you get in touch
If you message him, your message and contact details are used only to reply to you and to carry out any work you ask about. They are not shared or sold, and are kept only as long as needed for that purpose.
Your rights
You can ask to see, correct or delete personal information held about you by using the contact details above. If you are unhappy with how your information has been handled, you can complain to the Information Commissioner's Office at ico.org.uk.