Sir Thomas More deals with matters so controversial that it may never have reached performance on stage. The authors' determination to deal with rioting and religious politics led to a play that is compelling in its own right but also intriguing as a document of what could, and could not, be articulated in the early modern public theatre. Surviving only as a manuscript text on which Shakespeare was thought to have worked, it can be considered to be the most important play manuscript of the period, owing to its highly complex witness to collaboration between dramatists and to censorship.