There are two different bands with this name: 1. Null and Void were anarcho band around from 1980 to about 1985. Members of this band are Mark Hedge, Adie Tompkins and Andrew Barker. They released one 7” single and two albums and 2 ep ‘type’ cassettes. More details about this band are available at their official web site http://www.null-and-void.com/ 2. Null and Void were also a Californian synth-post punk band.