He studied Fashion at Central St Martin's College of Art and Design in London but during his second year he dropped out to work for Vivienne Westwood's organisation. He then became a professional model, working with French Connection and Calvin Klein.

He quit modelling and became an actor and made numerous appearance in BBC Television productions. Williams was nominated for Best Actor at Canadian 'Gemini Awards' for his lead role in the film "No Night Is Too Long" (2002).