DR Francis Sedgemore
physicist | science journalist | writer | editor


I live in Royston near Cambridge, on the intersection between the ancient thoroughfares of Ermine Street and the Icknield Way.

You can contact me by mobile phone, email, and encrypted messaging...

Matrix may be used for secure voice and video calls as well as text messaging.

If you wish to send me encrypted files via email, do not encrypt the entire message. Encrypt files using my PGP public key, and attach them to an email.