No contact was made between the two companies during the rehearsal period, prompting the tag line "Two casts, two crews, two directors, two venues, one new play... no communication".
[2] Kirkwood's third play, Guns or Butter, about soldiers being overcome by the horror of war, was written for the Terror 2007 Festival at the Union Theatre, London.
[6] In October 2012, Kirkwood's play NSFW premiered at the Royal Court Theatre, starring Janie Dee and Julian Barrett and directed by Simon Godwin.
[citation needed] In May 2013, Kirkwood's play Chimerica, which examines the relationship between the US and China since the Tiananmen Square protests through the eyes of a former activist, and features over forty scene changes and British-Chinese actors, opened at the Almeida Theatre.
[7] At the 2014 Olivier Awards, Chimerica won for best new play, best director (Lyndsey Turner), best lighting (Tim Lutkin and Finn Ross), best sound (Carolyn Downing), and best set design (Es Devlin).
[9] Kirkwood's play The Children opened at the Royal Court Theatre in November 2016, directed by James Macdonald and starring Ron Cook, Francesca Annis and Deborah Findlay, receiving positive reviews from critics.
[14] Rufus Norris directed her stage play Mosquitoes, which illustrates family disputes between sisters by referencing collisions in experimental physics, at London's National Theatre in 2017.
[17] Kirkwood's next play was titled The Welkin and concerned the case of a woman convicted of murder who claims to be pregnant, preventing a death sentence from being carried out.
[18] In 2021, Kirkwood wrote the play Maryland, which was staged shortly after at the Royal Court Theatre, and later adapted into a BBC dramatic television film.
[19] In June 2022, Kirkwood's play Rapture, opened at the Royal Court Theatre, credited in the marketing under the pseudonym Dave Davidson, and the false title That Is Not Who I Am.