The sequel to 'Up The Creek' sees David Tomlinson return as bumbling navy boffin Lieutenant Humphrey Fairweather. This time he is skipper of the ship Aristotle and, together with his second-in-command, Fairweather wreaks havoc when he is ordered to deliver the Aristotle to its new owners in a mythical Middle-Eastern country.
| Actor | Role |
|---|---|
 David TomlinsonLt. Fairweather | Lt. Fairweather |
| FFrankie HowerdBos'n | Bos'n |
 Shirley EatonJane | Jane |
 Thora HirdMrs. Galloway | Mrs. Galloway |
 Lionel JeffriesSteady Barker | Steady Barker |
 Lionel MurtonPerkins | Perkins |
 David LodgeScouse | Scouse |
| JJohn WarrenCooky | Cooky |
 Sam KyddBates | Bates |
 Edwin RichfieldBennett | Bennett |
 Howard WilliamsBunts | Bunts |
 Peter CollingwoodChippy | Chippy |
 Harry LandisWebster | Webster |
 Ian WhittakerLofty | Lofty |
 Tom GillMonsieur Philippe | Monsieur Philippe |
| AAmy DalbyEadie Lovelace | Eadie Lovelace |
 Esma CannonMaudie Lovelace | Maudie Lovelace |
 Mary WilsonVicky | Vicky |
| KKatherine ByrneCleo | Cleo |
 Michael GoodliffeLt. Commander Blakeney | Lt. Commander Blakeney |
 Michael RipperTicket Collector | Ticket Collector |
 Stanley UnwinPorter | Porter |
| LLarry NoblePostman | Postman |
 John StuartAdmiral | Admiral |
| JJohn HallSea Scout | Sea Scout |
| WWolfe MorrisAlgeroccan Major | Algeroccan Major |
 Ballard BerkeleyWhacker Payne | Whacker Payne |
 Charles Lloyd PackEl Diablo | El Diablo |
 Judith FurseChief Wren | Chief Wren |
 Walter HuddConsul | Consul |