| Year | Author | Title | Subject | Result | Ref. |
|---|
| Michael Meyer | Henrik Ibsen | Henrik Ibsen (–), Norwegian playwright and theatre director | Winner |
|---|
| James Pope-Hennessy | Anthony Trollope | Anthony Trollope (–), English novelist of the Victorian period | Winner |
|---|
| John Wilson | CB: A Life of Sir Henry Campbell-Bannerman | Sir Henry Campbell-Bannerman(–), Prime Minister of the United Kingdom from to | Winner |
|---|
| Andrew Boyle | Poor, Dear Brendan: The Quest for Brendan Bracken | Brendan Bracken (–), Irish-born businessman and British politician | Winner |
|---|
| Helen Corke | In Our Infancy | Helen Corke (–), English writer and schoolteacher | Winner |
|---|
| Winifred Gerin | Elizabeth Gaskell | Elizabeth Gaskell (–), English writer | Winner |
|---|
| Nigel Nicolson | Mary Curzon | Mary Curzon, Baroness Curzon of Kedleston(–), British noble, Vicereine of India | Winner |
|---|
| John Grigg | Lloyd George: The People's Champion | Lloyd George (–), P
|
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