Under Robinson and Roseman, the venue saw the premiere of works by writers including Duncan Macmillan, Tom Morton-Smith, Anna Jordan, Alice Birch, Charlene James, Katori Hall, Jon Brittain and Phoebe Eclair-Powell.

In August of the same year, Lisa Spirling became Artistic Director, directing the winner of the 2016 Theatre503 International Playwriting Award, In Event of Moone Disaster (October 2017) by Andrew Thompson, nine years after making her directorial debut Cotton Wool by Ali Taylor at the same venue.

Over 120 debut and emerging writers are staged each year in more than 70 productions ranging from one night series of shorts to full length four week runs.

In a two year cycle they read and receive over 4,000 scripts including their bi-ennial International Playwriting Award, 503 Five writers-in-residence, unsolicited and their pioneering Rapid Write Response programme.

Beth Steel, Lou Ramsden, Nimer Rashed, Rex Obano, Richard Marsh (2011–12); Brad Birch, Charlene James, Chris Urch, Gemma Langford, Jon Brittain (2013–14) Brian Mullin, Chloe Todd Fordham, Ella Greenhill, Neasa O'Callaghan, Vinay Patel (2015–16) Aisha Zia, Chris Hogg, Mahad Ali, Ross Willis, Yasmin Joseph (2017–18), Annie Jenkins, Benedict Lombe, Joel Tan, Jon Berry, Zak Mahinfar (2019–20) Winner Winner Nominations Winner Nominations – Winner – Olivier Awards, Outstanding Achievement in an Affiliate Theatre Rotterdam by Jon Brittain (Premiered at Theatre503 in 2015 before transferring to Trafalgar Studios) Nominations: Winner – Off West End, Best Producer (DEM Productions at Theatre503) Nominations – Winner – Argus Angel for Artistic Excellence (Margaret Thatcher Queen of Soho) Winner – Off West End, Best Set Designer (Signe Beckmann for A Handful of Stars) Nominations: Nominations – Off West End Awards: Winner – Off West End Awards: Winner – Olivier Awards, Best New Play, The Mountaintop by Katori Hall Nominated – Nominated – Evening Standard Awards, Most Promising Playwright, Katori Hall for The Mountaintop Shortlisted – Evening Standard Awards – Best Actor, David Harewood for The Mountaintop Nominated – TMA Awards, Best New Play, The Lifesavers by Fraser Grace (co-production with Mercury Theatre, Colchester) Winner – Meyer Whitworth Award, Ali Taylor for Cotton Wool Nominated – Peter Brook Empty Space Award Landmark Productions