Two British soldiers and a WREN take refuge at Stonehenge during a thunderstorm, they are struck by lightning and transported back to ancient Rome.
| Actor | Role |
|---|---|
 Tommy TrinderTommy Taylor | Tommy Taylor |
 Frances DayPoppaea | Poppaea |
 Sonnie HaleThe Professor | The Professor |
 Francis L. SullivanNero | Nero |
 Diana DeckerLydia | Lydia |
| EElisabeth WelchNora | Nora |
 Mary ClareVolumnia | Volumnia |
| EErnest MiltonTitus | Titus |
 Frederick PiperAuctioneer | Auctioneer |
 Robert WyndhamLionkeeper | Lionkeeper |
 Russell ThorndikeHigh Priest | High Priest |
 Danny GreenLictor | Lictor |
 James Robertson JusticeCenturion of the 8th Legion | Centurion of the 8th Legion |
 Kay KendallGirl (uncredited) | Girl (uncredited) |
 Alec MangoSecretary (uncredited) | Secretary (uncredited) |
 Bill ShineMinor Role (uncredited) | Minor Role (uncredited) |
 Julie SuedoSeñorita Àlvarez (uncredited) | Señorita Àlvarez (uncredited) |
| FFrank TickleMaster of Ceremonies (uncredited) | Master of Ceremonies (uncredited) |