Hartley is from London and is based in the UK and Australia. For Theatre503: Land of Our Fathers.
In London Hartley has lit productions in the West End, for the National, RSC, Donmar, Old Vic, Royal Court and ROH Linbury, and for the Almeida, BAC, Bush, Gate, Hampstead, Lyric Hammersmith, Tricycle, Menier Chocolate Factory, Southwark Playhouse and Stratford East. His UK regional work includes Birmingham Rep, Bristol Old Vic, Castleward Opera, Clwyd Teatr Cymru, Exeter Northcott, Manchester Royal Exchange, Sheffield Theatres, and the West Yorkshire Playhouse.
Europe includes Gate, Dublin; English Theatre, Frankfurt; Gothenburg Opera; Tiroler Landesteater, Innsbruck. Australia includes Sydney Theatre Company, Belvoir, Griffin and Darlinghurst Theatre Company in NSW; Melbourne Theatre Company, Malthouse and Red Stitch in Victoria; Siren Theatre, Ride On Theatre, Little Dove Theatre Art. South Africa includes the Fugard, Cape Town. US includes Broadway, Off-Broadway and regional.
Hartley is artistic director of C venues at the Edinburgh Festival Fringe.