 She had expressed interest in the West End production of "Wicked", but could not audition due to her involvement with "Mary Poppins".In 2011, Strallen originated the role of Kathy Selden in the UK revival of "Singin' in the Rain", a production that opened at the 2011 Chichester Festival Theatre and then moved to the West End Palace Theatre.She was nominated for the 2012 Olivier Award, Best Actress in a Musical for this role.