Lucy appeared as Joanne in Stephen Sondheim's Company at the Union Theatre in May-June 2009. The show was directed by Michael Strassen.

Reviews for Lucy included: Lucy Williamson’s Joanne brings the house down with the apocryphal Ladies Who Lunch. The Stage

She’s a lot younger than Elaine Stritch, more glamorous and she belts it magnificently. Michael Coveney WOS

Lucy Williamson resists the temptation to offer Joanne's usual drunk and angry The Ladies Who Lunch, offering instead one woman's heartbreaking realisation of what she's become. It's a definitive performance which makes true sense of a song which is often under or overdone. TotallyTheatre.com

Lucy Williamson’s Ladies Who Lunch, an introspective view of Joanne’s existence, is magnificent and memorable and show stopping, much like Williamson herself whose energy and passion through this number stops the show.Reviews Gate