Theatre503 in Battersea operates a biennial International Playwriting Award to recognise an emerging playwright. The Award, which attracts over 2,100 scripts from more than 50 countries, carries a prize of £6,000 provided by the Carne Trust, plus a guaranteed production of the winning play at Theatre503.

In alternate years, the theatre also offers an extensive mentorship programme to 5 emerging playwrights, employing experienced professionals from major theatres. Each individual is expected to have written a full-length play by the end of their tenure, where at least one of which will receive a commercial production at the theatre.

In 2018, in tandem with directing workshops at the Sherman Theatre, Cardiff, six young playwrights based in Wales were also given a year-long mentoring programme under the supervision of playwright Brad Birch. The plays they wrote were given a professional reading at Theatre503, and at least one is expected to receive a commerical production in 2021, while three of the group have secured playwriting commissions.

On an exceptional basis, the Carne Trust also provides part commissions for new plays by selected emerging playwrights, and contributes limited financial support to theatrical productions, especially those involving former beneficiaries.