Only a Kingdom has played on four regional stages around the country.

In November 2010, The York Theatre presented a developmental lab production of Only a Kingdom directed and choreographed by David Glenn Armstrong and performed by a cast with numerous broadway and off broadway credits. The music supervisor, arranger and orchestrator was Peter Mansfeld and the music director was Milton Granger.

During the summer of 2004, a staged reading of the show was produced by The John Drew Theater of Guild Hall in East Hampton, NY, staged by two-time Tony Award® winning choreographer Donald Saddler. Among the well-known performers were Kaitlin Hopkins, George S. Irving, Dina Merrill, Marni Nixon and JoAnne Worley.

In late September 2001, The National Alliance for Musical Theatre (NAMT) showcased 45 minutes from Only a Kingdom as part of the Spotlight presentation prior to the commencement of their Festival of New Musicals. Drama Desk Award nominated Director, Scott Schwartz, (Bat Boy, tick, tick ... BOOM), directed the Spotlight presentation. Kaitlin Hopkins (Bat Boy), who played Wallis Simpson at The Pasadena Playhouse, reprised her role in this reading, and Malcolm Gets ("Caroline in the City") played King Edward VIII.

The Pasadena Playhouse mounted a full production of Only a Kingdom in 1998, directed by Scott Schwartz.

The show received its professional premiere at Mill Mountain Theatre in Roanoke, VA and The Stevens Center in Winston-Salem, NC in 1997.

There was a staged reading of the show in Manhattan in 1994, directed by Donald Saddler, and a full student production at The Boston Conservatory in 1996.