DEREK BROWN
http://www.adasecurit.enta.net/
Sells alarms, does our Del.  You'd never guess by looking at his page.

ANTHONY DAVIES
http://www.coachman.force9.co.uk/
Bits and pieces of stuff - once he's decided what to do with his page!

CRAIG DIMENT
http://freespace.virgin.net/craig.diment/craigs.htm
A bit strange, this site.  Some funny stuff there, though - if you dig for it.