Chieftain is Steve Cobby and Adam Regan.
Adam is a DJ (Different Drummer, Leftfoot), club owner (Hare & Hounds, Bull's Head), he has DJ'd all over the world with the 'Different Drummer Soundsystem'.
Cobby is is a musician, composer, producer, and occasional DJ. He is half of The Cutler, Fila Brazillia and Hey, Rube!. See www.steeltiger.co.uk/artists/stevecobby.php for more information.