When does The Crystal Maze return?

The Crystal Maze is a British game show based on the format of Fort Boyard. It was created by Jacques Antoine, based on his format for the French game show. The show is notable for the use of golf ball-sized Swarovski glass crystals as a reward for each challenge successfully completed by contestants. The first four series and three specials were hosted by Richard O'Brien, with the remaining two series and specials hosted by Edward Tudor-Pole.