Grinding, gruelling and unceasing, Dennis Barker's training sessions push his young swimmers to the limits of their endurance. Outstanding among them is 14-year-old Rachel Southern. Destined for stardom perhaps, but also destined to realise that winning doesn't always mean coming first.
| Actor | Role |
|---|---|
 Jane MorrisRachel Southern | Rachel Southern |
 David CalderDennis Barker | Dennis Barker |
 Richard MooreBert Southern | Bert Southern |
 Jane WoodGillian Southern | Gillian Southern |
| GGillian KerrodValerie Foy | Valerie Foy |
| LLen MartenGordon Platt | Gordon Platt |
| BBernard BrownRowley Henson | Rowley Henson |
| RRita LesterElaine Bagley | Elaine Bagley |
| PPamela ShawMarge | Marge |
| MMartin DonlanPhil | Phil |
| JJoan CampionMiss Forsyth | Miss Forsyth |
| GGwyneth FleetwoodMrs Pearce | Mrs Pearce |
| CColin BeanMayor | Mayor |
| JJamie BartholomewGeorge Porter | George Porter |
| MMartin AshcroftJugs Dyson | Jugs Dyson |
| AAnn ThompsonEsther Smethurst | Esther Smethurst |
| AAndrea SchofieldLorraine Bagley | Lorraine Bagley |
| MMike PictonJed | Jed |
| FFiona DaviesHelga | Helga |
| LLucy Elizabeth OsbandSusan Walsh | Susan Walsh |