As well as using his own name, he composed under various pseudonyms, including Frank Sterling (in collaboration with Stuart Crombie), Jack Sharp, Charles Kenbury, Michael Rodney and (more commonly) Peter Dennis. This was to avoid any signs of favouritism on behalf of the record labels, as he was publishing his own music. He conducted the Peter Dennis Band and the Peter Dennis Orchestra on several LP recordings, but these were most likely groups made up of session musicians rather than typical membership-based groups. In the early 1960s, he joined the record label Conroy Music – sometimes referred to as Berry/Conroy (although the Berry in the name is actually that of Roy Berry, no relation) – which published a large amount of library music. One piece, "Moviescope", was selected to be the theme to the WGN-TV television series "Family Classics".