The band debuted on vinyl with the single "Don't Dictate", issued by Virgin in November of the same year. The band went on to release two studio albums, "Moving Targets" and "Coming Up for Air", as well as an official bootleg ("Race Against Time"). Later there would be a "Best of Penetration" compilation album. After a measure of success during 1978/79, including a headline show at the Rainbow Theatre and a five-week American tour, they announced a split in October 1979.