In 2011 he was made an Associate (ARAM) of the Royal Academy of Music and was awarded a Fellowship (FRAM) in the 2018 honours list.
In March 2011 he made his Cabaret debut at Lauderdale House, Highgate, before taking over the role of Emmett Forrest in the West End production of Legally Blonde until its closure in April 2012.
In November and December 2012, Ashfield starred in the limited-run UK premiere of Boy Meets Boy at the Jermyn Street Theatre before taking on the role of Elder McKinley in the Broadway transfer The Book of Mormon, which opened at the Prince of Wales Theatre on 25 February 2013.
He concluded his West End run on 5 August 2016, to continue his award-winning performance as Elder McKinley at the Eugene O'Neill Theatre on Broadway.
London Theatre Interview with Stephen Ashfield Leadvocals (together with Katie Birtill) of Rudolph's Music Library 2012.