Kelly trained at RADA and has featured regularly for The Mercury Theatre Company. She last appeared here as Kate in Dancing at Lughnasa. Other Mercury Theatre Company productions have included Elizabeth Sandry in The Grapes of Wrath, Julius Caesar, The Promise, The Importance of being Earnest, The Europeans and The Crucible. Other work in theatre includes Cinderella (Lyric Hammersmith and Warwick Arts Centre); Blithe Spirit (Watermill Theatre); As You Like It (Watford Palace Theatre); Future Me (Theatre 503); Coram Boy (National Theatre); Alice’s Adventures in Wonderland and Beasts and Beauties (Bristol Old Vic); Twelfth Night (Bolton Octagon) and Going Down in History (Work-Horse).
TV and film includes Come on Eileen (Foal Films); Casualty (BBC); Tales of Uplift and Moral Improvement (Channel X); My Wife is an Actress (Timothy Burrill Productions) and The Fall (NFTS).