After graduation, Williams worked with the Royal Shakespeare Company in both Stratford-upon-Avon and London and in 1995 toured the United States in a production of Shakespeare's "Richard III" starring Ian McKellen.
After graduation, Williams worked with the Royal Shakespeare Company in both Stratford-upon-Avon and London and in 1995 toured the United States in a production of Debbie does dallas, in which she played the lead role. She also starred in Shakespeare's "Richard III" starring Ian McKellen.