He has built models and ships for some of the most memorablefilms TV shows.
He will be bringing a few of his creations with him for convention goers to admire.
His credits include Crystal Maze, Star Trek Voyager, Austin Powers International Man of Myster, Die Another Day and Men In Black.
Co-organiser Steve Dickinson said: “Over the moon with Steve coming back, his fantastic work is scattered throughout geek TV and film, he always brings a thing of beauty for his table, can’t wait to see what shows up.”
Other guests include David Warner, Sylvester McCoy and Sophie Aldred.
The convention is at the Spa complex on Saturday April 8 and Sunday April 9.
Tickets for the event are on sale now.