Will Hay
Captain Ben Cutlet
Moore Marriott
Jeremiah Harbottle
Graham Moffatt
Albert
Norma Varden
Olivia Potter-Porter
K
Kenneth Warrington
Yates
Dennis Wyndham
Maryatt
Amy Veness
Emma Harbottle
Peter Gawthorne
Bit Role (uncredited)
George Merritt
Officer on Yacht
C
Charles Rolfe
Second Detective
L
Leonard Sharp
Crew Member
Harry Terry
Crew Member
P
Percy Walsh
Captain of the 'Rob Roy'