Roddy wanted to play guitar, so he came to London in 1978 and looked for work. After a couple of years playing in bands and recording in cheap studios, a songwriting production team adopted him as an arranger, which led to production work for several major labels.

He had no big hits, except in Norway, but went on to have a successful career as a session musician for many of the people he had met, including George Michael, Rick Astley, Bomb The Bass, Pepsi and Shirlie, Sinitta, Jason Donovan, Eighth Wonder, The Pasadenas, Charles Aznavour, Basement Jaxx, John Parr, Roland Rat and The England Football Team. That work led him into film and TV music, first as a player and then as a composer, for about twenty years, during which he also started and ran a small, underfunded record label called Boomtime. Roddy was asked to come to LCCM to teach Audio Visual Synchronisation (film and television music) in 2011.