This particular Zilch label - there was another, more productive, one in the 1980s - dates from 1978. It seems to have issued just the one single, a version of the traditional tune 'Portsmouth', played by the Band Of Yorkshire Imperial Metals (ZILCH-1). Mike Oldfield's version had been a hit in 1976, but the BOYIM rendering failed to emulate that success. The logo of the 1980s Zilch label is different to the one on the single above, so presumably they were different companies.
Copyright 2006 Robert Lyons.