Alison made a decision to put her work in musical theatre on hold when she had her second child. Before this time, Alison played a varety of roles in West End shows.
| RNT 50TH CELEBRATION | Shawntel JSTO | Royal National Theatre |
| CATS | Grizabella | Dubai |
| THE PIRATES OF PENZANCE | Ruth | The Barbican |
| SHOES | Herself | Sadlers Wells Theatre |
| JERRY SPRINGER THE OPERA | Shawntel / Eve | The Sydney Opera House |
| ON THE TOWN | Diana Dream | Theatre du Chatelet, Paris |
| ON THE TOWN | Diana Dream | English National Opera |
| JERRY SPRINGER THE OPERA | Shawntel / Eve | Royal National Theatre |
2004 Olivier Award Nomination for Best Actress in a Musical |
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| SMOKEY JOE'S CAFÉ | Herself | Prince of Wales Theatre |
| EATING RAOUL | Mary Bland | Bridewell Theatre |
| THE HOT MIKADO | Pitti - Sing | Queen's Theatre |
| GREASE | Jan | Dominion Theatre |
| THE FABULOUS SINGLETTES | Herself | Piccadilly & Comedy Theatres |
| PRISONER CELL BLOCK H: The Musical | Mrs Austin | Queen's Theatre |
| LES MISERABLES | Ensemble | Palace Theatre |
| HONK | Ida | Watermill Theatre |
| FAME | Mabel | Oslo Spektrum |
| BLACK GOES WITH EVERYTHING | Herself | Churchill Theatre |
| NINE | Isle von Hesse | Original Australian Cast |
| PIRATES OF PENZANCE | Daughter | Victoria State Opera |
