| Series cast summary: |
 | Lynette Davies | - | Davinia Prince 26 episodes, 1977-1978 |
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 | John Barron | - | Sir Clive Farmer 26 episodes, 1977-1978 |
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 | Geoffrey Whitehead | - | Ronnie Bartlett 25 episodes, 1977-1978 |
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 | Patsy Kensit | - | Emma Prince 24 episodes, 1977-1978 |
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 | William Gaunt | - | Gareth Brown 22 episodes, 1977-1978 |
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| Helen Cleaves | - | Gwynneth 21 episodes, 1977-1978 |
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 | Peter Copley | - | Dr. Richard Montagu 21 episodes, 1977-1978 |
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| Ellis Dale | - | Geoffrey Tatum 21 episodes, 1977-1978 |
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| Andrew Dove | - | Paul Prince 20 episodes, 1977-1978 |
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| Gerald Sim | - | Terry Bickles 16 episodes, 1977-1978 |
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| Anthea Holloway | - | Annie 15 episodes, 1977-1978 |
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| Janet Spencer-Turner | - | Patricia Wyatt 15 episodes, 1978 |
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 | Bernard Lee | - | Eddie Prince 13 episodes, 1977-1978 |
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 | Michael Craig | - | Tom Pearson 11 episodes, 1978 |
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