A little boy named Tommy watches as his father is arrested after a brawl. Tommy believes his father must have killed someone and rather than return home, he heads to Tower Bridge to set up home there.
| Actor | Role |
|---|---|
| IIan MaclaineTommy Doyle | Tommy Doyle |
 Liam RedmondPat Doyle | Pat Doyle |
 James HayterTugboat Skipper | Tugboat Skipper |
 Geoffrey KeenBridge Master | Bridge Master |
 Jack MacGowranMarket Porter | Market Porter |
 Bill ShineBridge Mechanic | Bridge Mechanic |
 Arthur LoweBridge Mechanic | Bridge Mechanic |
 Norman MacOwanTugboat Engineer | Tugboat Engineer |
 Jack StewartBridge Engineer | Bridge Engineer |
 Winifred KingstonTourist | Tourist |
 Royal DanoEvangelist | Evangelist |
| JJocelyn BrittonYoung Woman | Young Woman |
 Rita WebbLandlady | Landlady |
 Chili BouchierPublican's Wife | Publican's Wife |
| JJimmy HerbertPunch and Judy Puppeteer | Punch and Judy Puppeteer |
 Andreas MalandrinosOrgan Grinder | Organ Grinder |
 Dido PlumbTramp | Tramp |
 Stuart SaundersPublican | Publican |
 Meadows WhiteYeoman Warder | Yeoman Warder |