Ward first rose to fame by joining the Australian punk rock band The Saints, replacing their former bassist Kym Bradshaw. Ward began playing with the band in 1978, and played on their second album Eternally Yours and third album Prehistoric Sounds, both released the same year. A little after the release of Prehistoric Sounds, Ward left the band and was replaced by Janine Hall.
After quitting The Saints, Ward joined the influential English punk band The Damned. The band recorded their comeback album Machine Gun Etiquette in 1979 and released it the same year. Critics and fans alike were pleasantly surprised, and applauded the band for making a successful bounce back to the scene. Ward played on all the songs on the album save for Ballroom Blitz, a cover of the song originally written by Sweet which had former Hawkwind singer/bassist and current Motörhead singer/bassist Lemmy. Ward played with the band for a short time after the album's release, even performing with the band on The Old Grey Whistle Test before leaving the band in late 1979. He was replaced by former Eddie and the Hot Rods bassist Paul Gray.
Ward has shown interest in the burgeoning New Wave of British Heavy Metal movement, which was kicked off shortly before he left The Damned by bands like Witchfynde and Saxon. Ward created a new band to go along with the movement, which he called Tank. He hired Peter and Mark Brabbs to play with him, and in 1980 Tank was officially formed. In 1982, they released their debut album Filth Hounds of Hades, which has been a landmark album in the NWOBHM movement. After their third album This Means War, the Brabbs brothers left, and were replaced by Graeme Crallan and Michael Bettel on drums, and Chris Evans on guitar along with Mick Tucker. After their fifth album (which was self-titled) was released in 1987, growing disputes over musical direction and lack of commercial success grew more frequent, which led the band to split in 1990.
In 1997, Tank reformed with Ward on vocals and bass, Bruce Bisland on drums, and Tucker and Evans on guitars. They recorded and released one more album as the original Tank, entitled Still At War. However, the reunion was short lived, as legal disputes and recording issues for their supposed seventh studio album Sturmpanzer caused the band to split up once again.
In 2008, a new Tank was announced, fronted by Tucker and Evans. This Tank has recorded and released three new albums: War Machine in 2010, War Nation in 2012, and Valley of Tears in 2015. In response to the new Tank, Ward created another Tank, in which he was the sole musician. Ward's new Tank released one album so far; Breath of the Pit in 2013. Ward is expected to release Sturmpanzer in 2015.