In 2009, he organised the Big Slick International in Purley, London, which comprised an invitational GM tournament and FIDE Rated Open.

Most notably, he has provided official commentary at the Gibraltar Chess Festival alongside Irina Krush, Elisabeth Pähtz in 2016 and Jovanka Houska in 2017 and 2018.

In 2008, he founded a chess media publishing company called "GingerGM" with International Master Simon Ansell.

Williams was director of the company SKW Investments, which was implicated by HM Revenue and Customs in a pension liberation scheme.

Each season showcased a prestigious tournament with both male and female competitors, including Richard Rapport, Ju Wenjun, Alexandra Kosteniuk, Arkadij Naiditsch, and Nigel Short.