Mother Riley plays a nurse who was forced to volunteer for the Auxiliary Territorial Service. Mayhem ensues until she is able to prevent German spies from acquiring important documents.
| Actor | Role |
|---|---|
 Arthur LucanOld Mother Riley | Old Mother Riley |
 Kitty McShaneKitty Riley | Kitty Riley |
 Glen AlynPauline | Pauline |
| DDorothy DewhurstMrs. Rayful | Mrs. Rayful |
 Martita HuntCommandant | Commandant |
| HH.F. MaltbyGen. Hogsley | Gen. Hogsley |
 Garry MarshDr. Leach | Dr. Leach |
| BBryan PowleyMr. Rayful | Mr. Rayful |
 Bruce SetonLt. Travers | Lt. Travers |
 Jeanne StuartNurse Wilson | Nurse Wilson |