Pete Barnacle on three albums: "Outland" (1987), "Price You Pay" (1988) and "SOD's Law" in 1992. This band also toured in 1991 billed as Theatre Of Hate. Since 2006, formed the band GoDoG together Sakate Sōtarō and Hashimoto Hiroyuk. The line-up of Gillan in which he played was: Ian Gillan also sang for the bands Deep Purple, Ian Gillan Band, and Black Sabbath. Barnacle is named as a musician on Gillan's self-titled album although he never actually played on the album, but performed live with the band. The line-up of Girl in which he played was: Pete Barnacle played on the Girl
Gary James Cregan & Co and London blues-rock act Bad Influence. He has performed live on stage with The Ian Gillan Band, Graham Bonnet, Don Airey, Mick Ralphs, Paul Young and made a guest appearance playing drums for UK the prog rock band Breathing Space. In the studio, as well as his extensive back catalogue with Thunder and Magnum, Harry has contributed to work by Don Airey, Russ Ballard, Shadowman (featuring FM's vocalist Steve Overland, Heartland's Steve Morris and Thunder's Chris Childs), Kate Aumonier, Carl Sentance, Bucket & Co and Hellfire Corner. Harry is backed by Pearl, Paiste, Pro-Mark and Protection Racket.