Born in the UK, Simon spent his childhood days in Trinidad. He later returned and became the head chorister at Hereford Cathedral in England. In 1988 Law and his sister Joanna performed as a duo called City Heat, and were signed to Chrysalis Records.
During the late 1980s, Law joined Soul II Soul, a British band that featured Lamya. While Law was with Soul II Soul, the group had commercial success with the singles “Keep on Movin'” and “Back to Life (However Do You Want Me)”, which topped the UK Singles Chart in 1989 for four weeks. The single was the fifth best-selling single in the UK that year. He left the band in 1990, although he played on their later albums.
After leaving Soul II Soul, Law produced his sister Joanna’s cover dance track “The First Time Ever I Saw Your Face” released on Beggars Banquet.
In 1993 Law and Ross Anderson remixed Duran Duran’s “Come Undone”, which included recording the ‘La Fin De Siécle’ track released on various international versions of the single. As a record producer, Law has worked with artists such as Chanté Moore, James “J.T.” Taylor, and Maxi Priest. He is also one half of electronic duo Una Mas, with production/remix partner Lee Hamblin.
Other work includes writing themes for BBC TV, notably the Travel Show.