 John LoderReginald Parker / Edward Grey | Reginald Parker / Edward Grey |
 June DuprezApril Manby Carson | April Manby Carson |
 Michael St. AngelLieutenant Bob Carson | Lieutenant Bob Carson |
 Miles ManderChief Inspector W.R. Allison | Chief Inspector W.R. Allison |
 Rose HobartDorothy Kent | Dorothy Kent |
 Gilbert EmeryDr. Manby | Dr. Manby |
 Rex EvansLeslie Shelton | Leslie Shelton |
 Matthew BoultonInspector Graham | Inspector Graham |
 Olaf HyttenBanks | Banks |
 Lydia BilbrookMrs. Manby | Mrs. Manby |
 Ian WolfeLord Mayor Herman Brandon R. Clive | Lord Mayor Herman Brandon R. Clive |
| MMilton OwenInspector (Uncredited) | Inspector (Uncredited) |
| NNorman AinsleyFirst Passenger (Uncredited) | First Passenger (Uncredited) |
| GGeorge AtkinsonBellboy (Uncredited) | Bellboy (Uncredited) |
 Frank BakerInspector (Uncredited) | Inspector (Uncredited) |
| FFrank BensonBellboy (Uncredited) | Bellboy (Uncredited) |
 Lillian BronsonHotel Maid (Uncredited) | Hotel Maid (Uncredited) |
| GGeorge BroughtonBellboy (Uncredited) | Bellboy (Uncredited) |
| TTom BurtonPoliceman (Uncredited) | Policeman (Uncredited) |
 Wheaton ChambersClerk (Uncredited) | Clerk (Uncredited) |
| RRobin Sanders ClarkEnglish Pilot (Uncredited) | English Pilot (Uncredited) |
| HHarry ClayPilot (Uncredited) | Pilot (Uncredited) |
| RRobert CoryChauffeur (Uncredited) | Chauffeur (Uncredited) |
 Alec CraigVacuuming Bellboy (Uncredited) | Vacuuming Bellboy (Uncredited) |
 Victor CutlerPilot (Uncredited) | Pilot (Uncredited) |
 Herbert EvansManby's Butler (Uncredited) | Manby's Butler (Uncredited) |
| EEllen George FergusonMrs. Shackleton (Uncredited) | Mrs. Shackleton (Uncredited) |
| SSherry HallHotel Desk Clerk (Uncredited) | Hotel Desk Clerk (Uncredited) |
| AAlec HarfordTicket Clerk (Uncredited) | Ticket Clerk (Uncredited) |
 Joy HaringtonLondon Waitress (Uncredited) | London Waitress (Uncredited) |
