- Unknown:
- John Galsworthy
- Produced By:
- Donald McWhinnie
- Farreil, Bastaple's confidential man:
- Charles Leno
- Tregay, a war correspondent:
- Richard Williams
- Dr Franks:
- Derek Birch
- Captain Lockyer:
- Hugh Manning
- James Collie:
- Ian Sadler
- Adrian Bastaple,.a financier:
- Ralph Truman
- Lord Elderleigh, a Non-Conformist peer:
- Howieson Culff
- Charles Stanforth editor of a Liberal paper:
- Carl Bernard
- Pole Revers, of the Foreign Office:
- Martin Lewis
- Robert Beton, an Imperialist:
- Oliver Burt
- Baron Zimbosch:
- Roger Delgado
- Saniway an elephant hunter:
- Brian Powley
- John Strood, an explorer:
- Deryck Guyler
- Herrick, a naturalist:
- Richard Hurndall
- Amina, an Arab girl:
- Brenda Dunrich
- Samehda, her brother:
- Victor Lucas
- Sadig, Strood's servant:
- Musa Suudi
- Mahmoud a Soudanese sergeant:
- Edward Ammum
