On graduating from Durham University, she co-founded the award winning theatre company for young people, en masse, with playwright and composer Oliver Birch.
For en masse, she directed and produced UK tours of Spaceship ’87, The Echo Chamber (Fringe First Winner 2003), The Ignatius Trail (Fringe First Winner 2004), The Shelter, The Iceberg and We All Fall Down, as well as directing The Wonderful Wizard of Oz in co-production with the Dukes Theatre, Lancaster.
Leach is Associate Director of the Leeds Playhouse, where she led on the programming and ensemble company for the Pop-Up Season 2018–19.
In early 2020, Amy will direct a brand new adaptation of Oliver Twist by Bryony Lavery for Leeds Playhouse and Ramps on the Moon.
Robin Hood and Arabian Nights (MTA Winner for Best Ensemble 2012) for the Library Theatre Company at The Lowry; Sabbat, The Rise and Fall of Little Voice, Peter Pan and My Mother Said I Never Should for The Dukes; Dracula, Peter Pan, Wilde Tales, Oliver Twist, The Animated Tales of Shakespeare and The Grimm Brothers' Circus for Theatre Royal Bath/the egg; and Dr Korczak’s Example for the Royal Exchange in Manchester (MEN Award Winner for Best Studio Production 2008).