I'm also a keen photographer, and my photo galleries can be found here
I also run a Knowledgebase website which contains various notes and tips I have made over time.
An IP Calculator can be found here.
I have also mirrored the old Psion pages at ftp.cs.tu-berlin.de - data and applications for older Psion devices such as the 3a appear to be getting increasingly scarce - I found this site after much searching, hence I thought I would mirror the Psion section.
The original site can be found here appears to be dead.
Finally check out my son Keith's music on Youtube