Ha lavorato per il teatro in Caroline, or Change (Londra; Evening Standard e Laurence Olivier Awards come Migliore Nuovo Musical), The Wolves in the Walls (National Theatre of Scotland; TMA Award 2006), Once in a Lifetime e A Funny Thing Happened on the Way to the Forum (National), Jerry Springer: The Opera (National; Cambridge BAC e Edinburgh Assembly Rooms; Olivier, Evening Standard, Critics' Circle e Whatsonstage.com Theatergoer's Choice Awards come Best Musical), Mamma Mia! (Prince Edward, Tokyo, Seoul, Stockholm, tournée internazionale), The Full Monty (Prince of Wales; Evening Standard Best New Musical Award), Is There Life After High School? (Bridewell), Once on This Island (Royalty; Olivier Award per il Miglior Nuovo Musical), Cats (New London Theatre, tournée inglese), Pal Joey and Last Train From Berlin (Minerva), Maddie (Salisbury Playhouse), Definitely Doris (Kings Head) e Closer Than Ever (Jermyn Street).
Per il teatro Lowe ha lavorato come assistente alla musica in Les Misérables (Palace), Moby Dick (Piccadilly), Which Witch (Piccadilly), Nine (Royal Festival Hall) e Just So (Tricycle). Altri suoi credits comprendono le produzioni di Taboo, We Will Rock You e Desperately Seeking Susan.
Fra le composizioni musicali di Lowe: The Misanthrope (Minerva), The Secret Rapture (Minerva), The Blue Room (Minerva, Haymarket), Lettice and Lovage (Theatre Royal Bath, tournée inglese), Hysteria (Minerva), Into Exile (BBC Radio 4), Dear Exile (BBC Radio 4), The Ten Commandments e The Challenge (Mercury Workshop).
Ha inciso: Jerry Springer: The Opera, Mamma Mia!, The Challenge, Which Witch, Moby Dick, Sisters e It's Oh So Issy.