| Year | Title | Role | Venue | Ref. |
| 1952 | Mystery of Greenfingers | | YMCA Players, Hoylake | |
| 1954 | Nothing But the Truth | Ethel | |
| To Kill a Cat | Margaret Fenwick | |
| 1956 | The Caucasian Chalk Circle | Chorus | Vanbrugh Theatre, London | |
| The Frogs | | | |
| Pygmalion | Eliza Doolittle | St Pancras Town Hall | |
| The Winter's Tale | Paulina | | |
| 1957 | Doctor in the House | | Connaught Theatre, Worthing | |
| Separate Tables | Jean Stratton / Jean Tanner | Queen's Theatre, Hornchurch | |
| Rum Punch | | |
| Ring For Catty | | |
| The White Sheep of the Family | | |
| All Kinds of Men | Ruby | Arts Theatre, London | |
| 1958 | An Inspector Calls | | New Theatre, Crewe | |
| My Three Angels | | |
| Macadam and Eve | | |
| Trial and Error | | |
| Book of the Month | | |
| Jane Eyre | Jane Eyre | |
| The Glass Menagerie | | |
| Burdalane | | |
| Old Tyme Music Hall | | |
| A Girl Named Sadie | | UK tour | |
| 1961 | Fools Rush In | Pam | Dundee Repertory Theatre, Dundee | |
| In Search of Happiness | Marina | |
| The Durable Element | Katherine | |
| The Kitchen | | Royal Court Theatre, London | |
| 1962 | The Idiot | Nastasya Filippovna | Lyric Theatre, Hammersmith | |
| Come Back With Diamonds | | |
| Guilty Party | | Watford Palace Theatre, Watford | |
| Double Yolk | | |
| 1963 | Alfie | Siddie | Mermaid Theatre, London; then the Duchess Theatre, London | |
| 1964 | Theatre of Cruelty | Christine Keeler / Jacqueline Kennedy | London Academy of Music and Dramatic Art, London | |
| The Screens | Kadidja | Donmar Warehouse, London | |
| Marat/Sade | Charlotte Corday | Aldwych Theatre, London | |
| The Jew of Malta | Bellamira | |
| 1965 | Love's Labour's Lost | Princess of France | Royal Shakespeare Theatre, Stratford-upon-Avon | |
| Squire Puntila and His Servant Matti | Eva | Aldwych Theatre, London | |
| Hamlet | Ophelia | Royal Shakespeare Theatre, Stratford-upon-Avon | |
| The Investigation | Witness 4 | Aldwych Theatre, London | |
| Marat/Sade | Charlotte Corday | Martin Beck Theatre, New York | |
| 1966 | US | | Aldwych Theatre, London | |
| 1967 | Three Sisters | Masha | Royal Court Theatre, London | |
| Fanghorn | Tamara Fanghorn | Fortune Theatre, London | |
| 1973 | Collaborators | Katherine Winter | Duchess Theatre, London | |
| 1974 | The Maids | Solange | Greenwich Theatre, London | |
| 1975 | Hedda Gabler | Hedda Tesman | Richmond Theatre, London; then world tour (Australia, USA, Canada), and Aldwych Theatre, London | |
| 1976 | The White Devil | Vittoria Corombona | The Old Vic, London | |
| 1977 | Stevie | Stevie Smith | Vaudeville Theatre, London | |