- He has collaborated with Kronos Quartet, most notably on "Sun Rings", an evening-length multimedia production commissioned by NASA. A further collaboration, "4-Cast", premieres in May 2007. Other work in the performing arts field includes designing for the legendary Montréal based dance company La La La Human Steps, the Dublin production of Hal Wilner's "Came So Far For Beauty" and most recently a scenic design for Marianne Faithfull. Time magazine profiled Williams' work in September 2006 and New York's Metropolitan Home magazine featured him in their "Design 100" issue, May 2006. He has been honored by his peers several times, most recently when the George Michael stage was included in the 'best of the year' in Creative Review annual in Spring 2007. He was awarded 'Lighting Designer of the Year' at the Total Production International Awards 2006 in London. He received two nominations at the 2004 "Green Room" theatre awards in Melbourne, Australia. Total Production International also awarded him Best Lighting Designer at their 2003 awards and "Live!" magazine named him Designer of the Year for 2002. In 2001 he received an "EDDY" award in New York for excellence in entertainment design. Wired Magazine ranked him as one of the "Top 25 visionaries in entertainment" in 2000. 'Lighting Dimensions International' awarded him "Designer of the Year" in 1992, as did Performance Magazine in both 1992 and 1987
- Theatre projects include lighting and video scenery for the current "Little Britain Live" tour, and also 'Pam Ann' at the Bloomsbury Theatre, London. He designed the lighting and video content for the musical "We Will Rock You" playing at theatres in seven countries worldwide and also for "Barbarella" at the Raimund Theatre, Vienna.
- In 2006 he became an associate artist of London's Southbank Centre, creating an outdoor lighting installation at the Hayward Gallery & Queen Elizabeth Hall.