Wig is a regular poster in the Hirst Arts forums and has recently updated his hobbyist web site – Wig’s World.
He’s got some good galleries and articles up there. I’m tempted to try his modular dungeon room design in the future. Possibly mixed with the foam cavern system as well.
It was the ‘wash’ based paint scheme Wig used for his gothic dungeon that originally inspired me to try a similar technique for my recent piece of CD based 40k terrain.