Flanger, chorus, fuzz, wah-wah, delay and compressor pedals recorded direct to tape, created a guitar sound unique at that time.
He co-wrote the single "Slow Motion" from their 1978 third album, Systems of Romance, the original Ultravox line-up's only official hit.
[4][5] In addition to playing all guitars on Systems of Romance, Simon co-produced it with the band, Conny Plank (of Kraftwerk fame) and Dave Hutchins.
In early 1979, after the US tour with the band and no longer on Island Records, having been dropped by the label despite increased sales and positive reviews, John Foxx left Ultravox.
He played on the song "Saddest Quay", from Magazine keyboards player Dave Formula's solo album, Satellite Sweetheart, in 2009.
Live gigs at London's Marquee club and the borderline followed, though the band, despite being offered a contract by chrysalis records, was short-lived, with Currie subsequently deciding on forming another incarnation of Ultravox instead,without Simon, or anyone else, from the Humania project.